Methyl Alcohol
- Formula: CH4O
- Molecular weight: 32.0419
- IUPAC Standard InChIKey: OKKJLVBELUTLKV-UHFFFAOYSA-N
- CAS Registry Number: 67-56-1
- Chemical structure:
This structure is also available as a 2d Mol file or as a computed 3d SD file
The 3d structure may be viewed using Java or Javascript. - Isotopologues:
- Other names: Methanol; Carbinol; Methyl hydroxide; Methylol; Monohydroxymethane; Wood alcohol; CH3OH; Colonial spirit; Columbian spirit; Hydroxymethane; Wood naphtha; Alcool methylique; Alcool metilico; Columbian spirits; Metanolo; Methylalkohol; Metylowy alkohol; Pyroxylic spirit; Wood spirit; Rcra waste number U154; UN 1230; Pyro alcohol; Spirit of wood; Bieleski's solution; NSC 85232
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- Other data available:
- Phase change data
- Reaction thermochemistry data: reactions 51 to 100, reactions 101 to 150, reactions 151 to 200, reactions 201 to 250, reactions 251 to 300
- Henry's Law data
- Ion clustering data
- IR Spectrum
- Mass spectrum (electron ionization)
- Vibrational and/or electronic energy levels
- Gas Chromatography
- Fluid Properties
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Gas phase thermochemistry data
Go To: Top, Condensed phase thermochemistry data, Reaction thermochemistry data, Gas phase ion energetics data, References, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Data compiled as indicated in comments:
ALS - Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
DRB - Donald R. Burgess, Jr.
GT - Glushko Thermocenter, Russian Academy of Sciences, Moscow
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔfH°gas | -205. ± 10. | kJ/mol | AVG | N/A | Average of 9 values; Individual data points |
Quantity | Value | Units | Method | Reference | Comment |
ΔcH°gas | -763.68 ± 0.20 | kJ/mol | Cm | Rossini, 1932 | Flame Calorimetry; Corresponding ΔfHºgas = -201.49 kJ/mol (simple calculation by NIST; no Washburn corrections); ALS |
Constant pressure heat capacity of gas
Cp,gas (J/mol*K) | Temperature (K) | Reference | Comment |
---|---|---|---|
34.00 | 50. | Thermodynamics Research Center, 1997 | p=1 bar. Recommended entropies and heat capacities are in good agreement with other statistically calculated values [ Ivash E.V., 1955, Zhuravlev E.Z., 1959, Chen S.S., 1977, Chao J., 1986, Gurvich, Veyts, et al., 1989]. Please also see Chao J., 1986, 2.; GT |
36.95 | 100. | ||
38.64 | 150. | ||
39.71 | 200. | ||
42.59 | 273.15 | ||
44.06 ± 0.03 | 298.15 | ||
44.17 | 300. | ||
51.63 | 400. | ||
59.70 | 500. | ||
67.19 | 600. | ||
73.86 | 700. | ||
79.76 | 800. | ||
84.95 | 900. | ||
89.54 | 1000. | ||
93.57 | 1100. | ||
97.12 | 1200. | ||
100.24 | 1300. | ||
102.98 | 1400. | ||
105.40 | 1500. | ||
110.2 | 1750. | ||
113.8 | 2000. | ||
116.5 | 2250. | ||
118.6 | 2500. | ||
120. | 2750. | ||
121. | 3000. |
Constant pressure heat capacity of gas
Cp,gas (J/mol*K) | Temperature (K) | Reference | Comment |
---|---|---|---|
42.4 ± 1.3 | 279. | Stromsoe E., 1970 | Heat capacity at 279 K was obtained by thermal conductivity [ Halford J.O., 1957]. Vapor heat capacities from calorimetric measurements [ De Vries T., 1941] were converted to the ideal gas heat capacities by corrections for the gas imperfection effects [ Chen S.S., 1977, Chao J., 1986, 2]. Ideal gas heat capacities are given by [ Stromsoe E., 1970] as a linear function Cp=f1*(a+bT). This expression approximates the experimental values with the average deviation of 1.17 J/mol*K. The accuracy of the experimental heat capacities [ Stromsoe E., 1970] is estimated as less than 0.3%. Please also see De Vries T., 1941, Weltner W., 1951, Halford J.O., 1957.; GT |
48.0 ± 1.3 | 345.6 | ||
46.8 ± 1.2 | 347.35 | ||
46.1 ± 1.3 | 349.65 | ||
47.6 ± 1.2 | 356.55 | ||
46.7 ± 1.3 | 358.15 | ||
48.2 ± 1.3 | 358.85 | ||
48.8 ± 1.3 | 359.85 | ||
50.3 ± 1.3 | 368.15 | ||
49.0 ± 1.2 | 373.35 | ||
51.3 ± 1.3 | 382.15 | ||
51.1 ± 1.2 | 398.95 | ||
52.3 ± 1.3 | 401.15 | ||
51.3 ± 1.2 | 401.35 | ||
52.01 ± 0.42 | 403.2 | ||
53.2 ± 1.3 | 420.15 | ||
53.9 ± 1.2 | 431.45 | ||
54.8 ± 1.2 | 442.15 | ||
55.9 ± 1.3 | 442.65 | ||
56.0 ± 1.2 | 457.35 | ||
57.20 ± 0.42 | 464.0 | ||
57.8 ± 1.2 | 477.75 | ||
58.4 ± 1.2 | 485.05 | ||
59.5 ± 1.2 | 498.95 | ||
60.4 ± 1.3 | 521.2 | ||
61.4 ± 1.2 | 521.35 | ||
64.3 ± 1.2 | 555.95 | ||
66.4 ± 1.2 | 581.35 | ||
66.8 ± 1.2 | 585.35 |
Condensed phase thermochemistry data
Go To: Top, Gas phase thermochemistry data, Reaction thermochemistry data, Gas phase ion energetics data, References, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Data compiled as indicated in comments:
ALS - Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
DRB - Donald R. Burgess, Jr.
DH - Eugene S. Domalski and Elizabeth D. Hearing
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔfH°liquid | -238.4 | kJ/mol | Ccr | Baroody and Carpenter, 1972 | ALS |
ΔfH°liquid | -239.5 ± 0.2 | kJ/mol | Ccb | Chao and Rossini, 1965 | see Rossini, 1934; ALS |
ΔfH°liquid | -238.9 ± 3.6 | kJ/mol | Ccb | Green, 1960 | Reanalyzed by Cox and Pilcher, 1970, Original value = -238.5 ± 0.2 kJ/mol; ALS |
ΔfH°liquid | -250.6 | kJ/mol | Ccb | Parks, 1925 | ALS |
ΔfH°liquid | -251.3 ± 5.0 | kJ/mol | Ccb | Richards and Davis, 1920 | DRB |
Quantity | Value | Units | Method | Reference | Comment |
ΔcH°liquid | -725.7 ± 0.1 | kJ/mol | Ccb | Chao and Rossini, 1965 | see Rossini, 1934; Corresponding ΔfHºliquid = -239.5 kJ/mol (simple calculation by NIST; no Washburn corrections); ALS |
ΔcH°liquid | -726.5 ± 0.2 | kJ/mol | Ccb | Green, 1960 | Corresponding ΔfHºliquid = -238.7 kJ/mol (simple calculation by NIST; no Washburn corrections); ALS |
ΔcH°liquid | -726.34 ± 0.20 | kJ/mol | Ccb | Rossini, 1931 | Corresponding ΔfHºliquid = -238.83 kJ/mol (simple calculation by NIST; no Washburn corrections); ALS |
ΔcH°liquid | -715.05 | kJ/mol | Ccb | Parks, 1925 | Corresponding ΔfHºliquid = -250.1 kJ/mol (simple calculation by NIST; no Washburn corrections); ALS |
ΔcH°liquid | -713.83 | kJ/mol | Ccb | Richards and Davis, 1920 | At 291 K; Corresponding ΔfHºliquid = -251.34 kJ/mol (simple calculation by NIST; no Washburn corrections); ALS |
Quantity | Value | Units | Method | Reference | Comment |
S°liquid | 127.19 | J/mol*K | N/A | Carlson and Westrum, 1971 | DH |
S°liquid | 126.8 | J/mol*K | N/A | Kelley, 1929 | DH |
S°liquid | 129.7 | J/mol*K | N/A | Parks, Kelley, et al., 1929 | Extrapolation below 90 K, 34.3 J/mol*K. Revision of previous data.; DH |
S°liquid | 136.4 | J/mol*K | N/A | Parks, 1925 | Extrapolation below 90 K, 40.75 J/mol*K.; DH |
Quantity | Value | Units | Method | Reference | Comment |
S°solid,1 bar | 1.117 | J/mol*K | N/A | Ahlberg, Blanchard, et al., 1937 | DH |
Constant pressure heat capacity of liquid
Cp,liquid (J/mol*K) | Temperature (K) | Reference | Comment |
---|---|---|---|
79.5 | 298.15 | Filatov and Afanas'ev, 1992 | DH |
81.11 | 298.15 | Khasanshin and Zykova, 1989 | T = 175 to 338 K. Unsmoothed experimental datum.; DH |
80.24 | 298.15 | Andreoli-Ball, Patterson, et al., 1988 | DH |
80.35 | 298.15 | Okano, Ogawa, et al., 1988 | DH |
81.0 | 298.15 | Lankford and Criss, 1987 | DH |
81.32 | 298. | Korolev, Kukharenko, et al., 1986 | DH |
80.28 | 298.15 | Ogawa and Murakami, 1986 | DH |
81.56 | 298.15 | Tanaka, Toyama, et al., 1986 | DH |
80.22 | 298.15 | Costas and Patterson, 1985 | T = 298.15, 313.15 K.; DH |
81.47 | 298.15 | Zegers and Somsen, 1984 | DH |
78.90 | 288.15 | Benson and D'Arcy, 1982 | DH |
81.92 | 298.15 | Villamanan, Casanova, et al., 1982 | DH |
80.8 | 293.15 | Atalla, El-Sharkawy, et al., 1981 | DH |
81.13 | 298.15 | Carlson and Westrum, 1971 | T = 5 to 332 K.; DH |
83.7 | 298. | Deshpande and Bhatagadde, 1971 | T = 298 to 318 K.; DH |
85.8 | 313.2 | Paz Andrade, Paz, et al., 1970 | DH |
85.8 | 298.2 | Katayama, 1962 | T = 10 to 60°C.; DH |
80.8 | 311. | Swietoslawski and Zielenkiewicz, 1960 | Mean value 21 to 56°C.; DH |
86.2 | 323. | Hough, Mason, et al., 1950 | T = 323 to 353 K.; DH |
75.77 | 270. | Staveley and Gupta, 1949 | T = 90 to 270 K.; DH |
86.6 | 300.8 | Phillip, 1939 | DH |
83.56 | 313.15 | Fiock, Ginnings, et al., 1931 | T = 40 to 110°C.; DH |
79.9 | 292.0 | Kelley, 1929 | T = 16 to 293 K. Value is unsmoothed experimental datum.; DH |
78.2 | 270. | Mitsukuri and Hara, 1929 | T = 190 to 270 K.; DH |
79.9 | 290.1 | Parks, 1925 | T = 89 to 290 K. Value is unsmoothed experimental datum.; DH |
83.3 | 298. | von Reis, 1881 | T = 288 to 335 K.; DH |
Constant pressure heat capacity of solid
Cp,solid (J/mol*K) | Temperature (K) | Reference | Comment |
---|---|---|---|
68.39 | 120. | Sugisaki, Suga, et al., 1968 | glass phase; T = 20 to 120 K.; DH |
5.40 | 20.5 | Ahlberg, Blanchard, et al., 1937 | T = 5 to 28 K.; DH |
105. | 173. | Maass and Walbauer, 1925 | T = 93 to 173 K.; DH |
Reaction thermochemistry data
Go To: Top, Gas phase thermochemistry data, Condensed phase thermochemistry data, Gas phase ion energetics data, References, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Data compiled as indicated in comments:
B - John E. Bartmess
M - Michael M. Meot-Ner (Mautner) and Sharon G. Lias
RCD - Robert C. Dunbar
ALS - Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
Note: Please consider using the reaction search for this species. This page allows searching of all reactions involving this species. A general reaction search form is also available. Future versions of this site may rely on reaction search pages in place of the enumerated reaction displays seen below.
Reactions 1 to 50
By formula: Cl- + CH4O = (Cl- • CH4O)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 69. ± 10. | kJ/mol | AVG | N/A | Average of 8 values; Individual data points |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 94.6 | J/mol*K | HPMS | Evans and Keesee, 1991 | gas phase; M |
ΔrS° | 101. | J/mol*K | PHPMS | Hiraoka and Mizuse, 1987 | gas phase; M |
ΔrS° | 92.0 | J/mol*K | PHPMS | Sieck, 1985 | gas phase; M |
ΔrS° | 95.8 | J/mol*K | N/A | Larson and McMahon, 1984 | gas phase; switching reaction(Cl-)t-C4H9OH, Entropy change calculated or estimated; French, Ikuta, et al., 1982; M |
ΔrS° | 61.9 | J/mol*K | PHPMS | Yamdagni, Payzant, et al., 1973 | gas phase; Entropy change is questionable; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 42. ± 3. | kJ/mol | AVG | N/A | Average of 10 values; Individual data points |
CH3O- + =
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 1597. ± 8. | kJ/mol | AVG | N/A | Average of 6 values; Individual data points |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 1573.3 ± 2.6 | kJ/mol | H-TS | Nee, Osterwalder, et al., 2006 | gas phase; B |
ΔrG° | 1573.4 ± 2.3 | kJ/mol | H-TS | Osborn, Leahy, et al., 1998 | gas phase; B |
ΔrG° | 1565. ± 8.4 | kJ/mol | IMRE | Bartmess, Scott, et al., 1979 | gas phase; The acidity is 1.2 kcal/mol stronger than that from the D-EA cycle, due to the multi-compound fit for the acidity scale.; value altered from reference due to change in acidity scale; B |
ΔrG° | 1567. ± 8.8 | kJ/mol | H-TS | Haas and Harrison, 1993 | gas phase; Both metastable and 50 eV collision energy.; B |
ΔrG° | 1569.4 ± 2.5 | kJ/mol | TDEq | Meot-ner and Sieck, 1986 | gas phase; Experimental entropy: 21.5 eu, 0.6 less than H2O; B |
By formula: CH5O+ + CH4O = (CH5O+ • CH4O)
Bond type: Hydrogen bonds of the type OH-O between organics
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 136. | kJ/mol | PHPMS | Meot-Ner (Mautner), 1992 | gas phase; M |
ΔrH° | 135. | kJ/mol | PHPMS | Szulejko and McMahon, 1992 | gas phase; M |
ΔrH° | 134. | kJ/mol | PHPMS | Meot-Ner(Mautner), 1986 | gas phase; M |
ΔrH° | 138. | kJ/mol | PHPMS | Grimsrud and Kebarle, 1973 | gas phase; M |
ΔrH° | 141. | kJ/mol | ICR | Larson and McMahon, 1982 | gas phase; switching reaction((CH3)2OH+)(CH3)2O; Entropy change calculated or estimated; Grimsrud and Kebarle, 1973, Lias, Liebman, et al., 1984, Keesee and Castleman, 1986; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 121. | J/mol*K | PHPMS | Meot-Ner (Mautner), 1992 | gas phase; M |
ΔrS° | 122. | J/mol*K | PHPMS | Szulejko and McMahon, 1992 | gas phase; M |
ΔrS° | 111. | J/mol*K | PHPMS | Meot-Ner(Mautner), 1986 | gas phase; M |
ΔrS° | 128. | J/mol*K | PHPMS | Grimsrud and Kebarle, 1973 | gas phase; M |
ΔrS° | 119. | J/mol*K | N/A | Larson and McMahon, 1982 | gas phase; switching reaction((CH3)2OH+)(CH3)2O; Entropy change calculated or estimated; Grimsrud and Kebarle, 1973, Lias, Liebman, et al., 1984, Keesee and Castleman, 1986; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 105. | kJ/mol | ICR | Larson and McMahon, 1982 | gas phase; switching reaction((CH3)2OH+)(CH3)2O; Entropy change calculated or estimated; Grimsrud and Kebarle, 1973, Lias, Liebman, et al., 1984, Keesee and Castleman, 1986; M |
By formula: CH3O- + CH4O = (CH3O- • CH4O)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 123. ± 4.2 | kJ/mol | TDAs | Paul and Kebarle, 1990 | gas phase; B,M |
ΔrH° | 120.5 ± 1.3 | kJ/mol | TDAs | Meot-ner and Sieck, 1986 | gas phase; B,M |
ΔrH° | 123. ± 10. | kJ/mol | TDAs | Caldwell, Rozeboom, et al., 1984 | gas phase; Reanchored to average data from Paul and Kebarle, 1990 and Meot-ner and Sieck, 1986.; value altered from reference due to change in acidity scale; B |
ΔrH° | 79.5 ± 8.4 | kJ/mol | N/A | Moylan, Dodd, et al., 1985 | gas phase; B |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 133. | J/mol*K | PHPMS | Paul and Kebarle, 1990 | gas phase; M |
ΔrS° | 112. | J/mol*K | PHPMS | Meot-Ner(Mautner), 1986 | gas phase; n; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 84.94 | kJ/mol | IMRE | Mustanir, Matsuoka, et al., 2006 | gas phase; B |
ΔrG° | 82.8 ± 4.2 | kJ/mol | TDAs | Paul and Kebarle, 1990 | gas phase; B |
ΔrG° | 87.0 ± 2.1 | kJ/mol | TDAs | Meot-ner and Sieck, 1986 | gas phase; B |
ΔrG° | 84.9 ± 6.7 | kJ/mol | TDAs | Caldwell, Rozeboom, et al., 1984 | gas phase; Reanchored to average data from Paul and Kebarle, 1990 and Meot-ner and Sieck, 1986.; value altered from reference due to change in acidity scale; B |
Free energy of reaction
ΔrG° (kJ/mol) | T (K) | Method | Reference | Comment |
---|---|---|---|---|
79.9 | 296. | FA | MacKay and Bohme, 1978 | gas phase; From thermochemical cycle,switching reaction(CH3O-)H2O; Meot-Ner(Mautner), 1986; M |
By formula: C4H9O- + CH4O = (C4H9O- • CH4O)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 107. ± 4.2 | kJ/mol | TDEq | Meot-Ner and Sieck, 1986 | gas phase; B,M |
ΔrH° | 97.9 ± 9.2 | kJ/mol | CIDT | DeTuri and Ervin, 1999 | gas phase; B |
ΔrH° | 109. ± 10. | kJ/mol | N/A | Caldwell, Rozeboom, et al., 1984 | gas phase; Reanchored to average data from Paul and Kebarle, 1990 and Meot-ner and Sieck, 1986.; B,M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 117. | J/mol*K | N/A | Meot-Ner and Sieck, 1986 | gas phase; Entropy change calculated or estimated; M |
ΔrS° | 123. | J/mol*K | N/A | Caldwell, Rozeboom, et al., 1984 | gas phase; switching reaction(CH3O-)CH3OH, Entropy change calculated or estimated; re-evaluated using Meot-Ner(Mautner), 1986 and Paul and Kebarle, 1990; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 42.68 | kJ/mol | IMRE | Mustanir, Matsuoka, et al., 2006 | gas phase; B |
ΔrG° | 71.5 ± 6.7 | kJ/mol | TDEq | Meot-Ner and Sieck, 1986 | gas phase; B |
ΔrG° | 72.4 ± 6.7 | kJ/mol | IMRE | Caldwell, Rozeboom, et al., 1984 | gas phase; Reanchored to average data from Paul and Kebarle, 1990 and Meot-ner and Sieck, 1986.; B,M |
By formula: C2H5O- + CH4O = (C2H5O- • CH4O)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 114. ± 12. | kJ/mol | IMRE | Caldwell, Rozeboom, et al., 1984 | gas phase; Reanchored to average data from Paul and Kebarle, 1990 and Meot-ner and Sieck, 1986.; value altered from reference due to change in acidity scale; B,M |
ΔrH° | 107. ± 7.9 | kJ/mol | CIDT | DeTuri and Ervin, 1999 | gas phase; B |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 123. | J/mol*K | N/A | Caldwell, Rozeboom, et al., 1984 | gas phase; switching reaction(CH3O-)CH3OH, Entropy change calculated or estimated; re-evaluated using Meot-Ner(Mautner), 1986 and Paul and Kebarle, 1990; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 77.8 ± 8.4 | kJ/mol | IMRE | Caldwell, Rozeboom, et al., 1984 | gas phase; Reanchored to average data from Paul and Kebarle, 1990 and Meot-ner and Sieck, 1986.; value altered from reference due to change in acidity scale; B,M |
Free energy of reaction
ΔrG° (kJ/mol) | T (K) | Method | Reference | Comment |
---|---|---|---|---|
56.1 | 296. | FA | Mackay, Rakshit, et al., 1982 | gas phase; From thermochemical cycle,switching reaction(CH3O-)CH3OH; Caldwell and Kebarle, 1986, Taft, 1983; M |
By formula: (Cl- • CH4O) + CH4O = (Cl- • 2CH4O)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 59.0 ± 1.7 | kJ/mol | TDAs | Bogdanov, Peschke, et al., 1999 | gas phase; B |
ΔrH° | 57.32 ± 0.84 | kJ/mol | TDAs | Evans and Keesee, 1991 | gas phase; B,M |
ΔrH° | 59.0 ± 4.2 | kJ/mol | TDAs | Hiraoka and Mizuse, 1987 | gas phase; B,M |
ΔrH° | 54.4 ± 2.9 | kJ/mol | TDAs | Yamdagni, Payzant, et al., 1973 | gas phase; B,M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 101. | J/mol*K | PHPMS | Hiraoka and Mizuse, 1987 | gas phase; M |
ΔrS° | 92.0 | J/mol*K | HPMS | Evans and Keesee, 1991 | gas phase; M |
ΔrS° | 81.2 | J/mol*K | PHPMS | Yamdagni, Payzant, et al., 1973 | gas phase; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 30.5 | kJ/mol | TDAs | Bogdanov, Peschke, et al., 1999 | gas phase; B |
ΔrG° | 29.7 | kJ/mol | TDAs | Evans and Keesee, 1991 | gas phase; B |
ΔrG° | 28. ± 4.2 | kJ/mol | TDAs | Hiraoka and Mizuse, 1987 | gas phase; B |
ΔrG° | 30.1 ± 1.7 | kJ/mol | TDAs | Yamdagni, Payzant, et al., 1973 | gas phase; B |
By formula: (Cl- • 2CH4O) + CH4O = (Cl- • 3CH4O)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 48.12 ± 0.84 | kJ/mol | TDAs | Bogdanov, Peschke, et al., 1999 | gas phase; B |
ΔrH° | 45.2 ± 1.3 | kJ/mol | TDAs | Evans and Keesee, 1991 | gas phase; B,M |
ΔrH° | 49.4 ± 4.2 | kJ/mol | TDAs | Hiraoka and Mizuse, 1987 | gas phase; B,M |
ΔrH° | 51.5 ± 2.5 | kJ/mol | N/A | Yamdagni, Payzant, et al., 1973 | gas phase; B,M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 95.8 | J/mol*K | PHPMS | Hiraoka and Mizuse, 1987 | gas phase; M |
ΔrS° | 95.0 | J/mol*K | HPMS | Evans and Keesee, 1991 | gas phase; M |
ΔrS° | 98.7 | J/mol*K | PHPMS | Yamdagni, Payzant, et al., 1973 | gas phase; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 21.2 | kJ/mol | TDAs | Bogdanov, Peschke, et al., 1999 | gas phase; B |
ΔrG° | 16.7 | kJ/mol | TDAs | Evans and Keesee, 1991 | gas phase; B |
ΔrG° | 21. ± 4.2 | kJ/mol | TDAs | Hiraoka and Mizuse, 1987 | gas phase; B |
ΔrG° | 21.8 ± 1.3 | kJ/mol | TDAs | Yamdagni, Payzant, et al., 1973 | gas phase; B |
By formula: C8H5- + CH4O = (C8H5- • CH4O)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 90.0 ± 8.4 | kJ/mol | IMRE | Chabinyc and Brauman, 1999 | gas phase; B |
ΔrH° | 90. ± 12. | kJ/mol | N/A | Caldwell, Rozeboom, et al., 1984 | gas phase; Reanchored to average data from Paul and Kebarle, 1990 and Meot-ner and Sieck, 1986.; value altered from reference due to change in acidity scale; B,M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 123. | J/mol*K | N/A | Caldwell, Rozeboom, et al., 1984 | gas phase; switching reaction(CH3O-)CH3OH, Entropy change calculated or estimated; re-evaluated using Meot-Ner(Mautner), 1986 and Paul and Kebarle, 1990; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 46.0 ± 8.4 | kJ/mol | IMRE | Chabinyc and Brauman, 1999 | gas phase; B |
ΔrG° | 53.1 ± 8.4 | kJ/mol | IMRE | Caldwell, Rozeboom, et al., 1984 | gas phase; Reanchored to average data from Paul and Kebarle, 1990 and Meot-ner and Sieck, 1986.; value altered from reference due to change in acidity scale; B,M |
By formula: CN- + CH4O = (CN- • CH4O)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 65.7 ± 3.3 | kJ/mol | TDAs | Larson, Szulejko, et al., 1988 | gas phase; B,M |
ΔrH° | 69.5 ± 4.2 | kJ/mol | TDAs | Meot-ner, 1988 | gas phase; B |
ΔrH° | 69. ± 15. | kJ/mol | IMRE | Larson and McMahon, 1987 | gas phase; B,M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 96. | J/mol*K | PHPMS | Larson, Szulejko, et al., 1988 | gas phase; M |
ΔrS° | 102. | J/mol*K | N/A | Larson and McMahon, 1987 | gas phase; switching reaction,Thermochemical ladder(CN-)H2O, Entropy change calculated or estimated; Payzant, Yamdagni, et al., 1971; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 36.8 ± 0.84 | kJ/mol | TDAs | Larson, Szulejko, et al., 1988 | gas phase; B |
ΔrG° | 43.5 ± 4.2 | kJ/mol | TDAs | Meot-ner, 1988 | gas phase; B |
ΔrG° | 38. ± 9.6 | kJ/mol | IMRE | Larson and McMahon, 1987 | gas phase; B,M |
By formula: Li+ + CH4O = (Li+ • CH4O)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 154. ± 7.9 | kJ/mol | CIDT | Rodgers and Armentrout, 2000 | RCD |
ΔrH° | 159. | kJ/mol | ICR | Woodin and Beauchamp, 1978 | gas phase; switching reaction(Li+)H20, Entropy change calculated or estimated; Dzidic and Kebarle, 1970 interpolated; M |
ΔrH° | 160. | kJ/mol | ICR | Staley and Beauchamp, 1975 | gas phase; switching reaction(Li+)H2O, from graph; Dzidic and Kebarle, 1970 extrapolated; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 110. | J/mol*K | N/A | Woodin and Beauchamp, 1978 | gas phase; switching reaction(Li+)H20, Entropy change calculated or estimated; Dzidic and Kebarle, 1970 interpolated; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 127. | kJ/mol | ICR | Woodin and Beauchamp, 1978 | gas phase; switching reaction(Li+)H20, Entropy change calculated or estimated; Dzidic and Kebarle, 1970 interpolated; M |
By formula: I- + CH4O = (I- • CH4O)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 49.79 ± 0.84 | kJ/mol | TDAs | Bogdanov, Peschke, et al., 1999 | gas phase; B |
ΔrH° | 47.3 ± 4.2 | kJ/mol | TDAs | Caldwell and Kebarle, 1984 | gas phase; B,M |
ΔrH° | 46.9 | kJ/mol | PHPMS | Hiraoka and Yamabe, 1991 | gas phase; M |
ΔrH° | 46. | kJ/mol | PHPMS | Caldwell, Masucci, et al., 1989 | gas phase; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 71.5 | J/mol*K | PHPMS | Hiraoka and Yamabe, 1991 | gas phase; M |
ΔrS° | 74.5 | J/mol*K | PHPMS | Caldwell and Kebarle, 1984 | gas phase; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 24.1 | kJ/mol | TDAs | Bogdanov, Peschke, et al., 1999 | gas phase; B |
ΔrG° | 25. ± 4.2 | kJ/mol | TDAs | Caldwell and Kebarle, 1984 | gas phase; B |
ΔrG° | 24. ± 8.4 | kJ/mol | IMRE | Tanabe, Morgon, et al., 1996 | gas phase; Anchored to H2O..I- of Caldwell and Kebarle, 1984; B |
By formula: C2H5O+ + CH4O = (C2H5O+ • CH4O)
Bond type: Hydrogen bonds of the type OH-O between organics
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 127. | kJ/mol | ICR | Larson and McMahon, 1982 | gas phase; switching reaction((CH3)2OH+)(CH3)2O, Entropy change calculated or estimated; Grimsrud and Kebarle, 1973, Lias, Liebman, et al., 1984, Keesee and Castleman, 1986; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 113. | J/mol*K | N/A | Larson and McMahon, 1982 | gas phase; switching reaction((CH3)2OH+)(CH3)2O, Entropy change calculated or estimated; Grimsrud and Kebarle, 1973, Lias, Liebman, et al., 1984, Keesee and Castleman, 1986; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 93.3 | kJ/mol | ICR | Larson and McMahon, 1982 | gas phase; switching reaction((CH3)2OH+)(CH3)2O, Entropy change calculated or estimated; Grimsrud and Kebarle, 1973, Lias, Liebman, et al., 1984, Keesee and Castleman, 1986; M |
By formula: C2H7O+ + CH4O = (C2H7O+ • CH4O)
Bond type: Hydrogen bonds of the type OH-O between organics
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 124. | kJ/mol | ICR | Larson and McMahon, 1982 | gas phase; switching reaction((CH3)2OH+)(CH3)2O, Entropy change calculated or estimated; Grimsrud and Kebarle, 1973, Lias, Liebman, et al., 1984, Keesee and Castleman, 1986; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 111. | J/mol*K | N/A | Larson and McMahon, 1982 | gas phase; switching reaction((CH3)2OH+)(CH3)2O, Entropy change calculated or estimated; Grimsrud and Kebarle, 1973, Lias, Liebman, et al., 1984, Keesee and Castleman, 1986; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 90.8 | kJ/mol | ICR | Larson and McMahon, 1982 | gas phase; switching reaction((CH3)2OH+)(CH3)2O, Entropy change calculated or estimated; Grimsrud and Kebarle, 1973, Lias, Liebman, et al., 1984, Keesee and Castleman, 1986; M |
By formula: C3H7O- + CH4O = (C3H7O- • CH4O)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 113. ± 12. | kJ/mol | N/A | Caldwell, Rozeboom, et al., 1984 | gas phase; Reanchored to average data from Paul and Kebarle, 1990 and Meot-ner and Sieck, 1986.; value altered from reference due to change in acidity scale; B,M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 123. | J/mol*K | N/A | Caldwell, Rozeboom, et al., 1984 | gas phase; switching reaction(CH3O-)CH3OH, Entropy change calculated or estimated; re-evaluated using Meot-Ner(Mautner), 1986 and Paul and Kebarle, 1990; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 76.1 ± 8.4 | kJ/mol | IMRE | Caldwell, Rozeboom, et al., 1984 | gas phase; Reanchored to average data from Paul and Kebarle, 1990 and Meot-ner and Sieck, 1986.; value altered from reference due to change in acidity scale; B,M |
By formula: F- + CH4O = (F- • CH4O)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 124. ± 8.4 | kJ/mol | IMRE | Larson and McMahon, 1983 | gas phase; B,M |
ΔrH° | 123. ± 9.2 | kJ/mol | CIDT | DeTuri and Ervin, 1999 | gas phase; B |
ΔrH° | 97.5 ± 8.4 | kJ/mol | TDAs | Hiraoka and Yamabe, 1991 | gas phase; B,M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 105. | J/mol*K | PHPMS | Hiraoka and Yamabe, 1991 | gas phase; M |
ΔrS° | 94.6 | J/mol*K | N/A | Larson and McMahon, 1983 | gas phase; switching reaction(F-)H2O, Entropy change calculated or estimated; Arshadi, Yamdagni, et al., 1970; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 95.4 ± 8.4 | kJ/mol | IMRE | Larson and McMahon, 1983 | gas phase; B,M |
ΔrG° | 66.1 ± 8.4 | kJ/mol | TDAs | Hiraoka and Yamabe, 1991 | gas phase; B |
By formula: (Cl- • 3CH4O) + CH4O = (Cl- • 4CH4O)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 43.9 ± 4.2 | kJ/mol | TDAs | Hiraoka and Mizuse, 1987 | gas phase; B,M |
ΔrH° | 43.93 | kJ/mol | TDAs | Evans and Keesee, 1991 | gas phase; B |
ΔrH° | 46.9 ± 2.5 | kJ/mol | TDAs | Yamdagni, Payzant, et al., 1973 | gas phase; B,M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 95.8 | J/mol*K | PHPMS | Hiraoka and Mizuse, 1987 | gas phase; M |
ΔrS° | 110. | J/mol*K | PHPMS | Yamdagni, Payzant, et al., 1973 | gas phase; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 15. ± 4.2 | kJ/mol | TDAs | Hiraoka and Mizuse, 1987 | gas phase; B |
ΔrG° | 15.5 | kJ/mol | TDAs | Evans and Keesee, 1991 | gas phase; B |
ΔrG° | 13.8 ± 0.84 | kJ/mol | TDAs | Yamdagni, Payzant, et al., 1973 | gas phase; B |
By formula: Br- + CH4O = (Br- • CH4O)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 60.67 ± 0.42 | kJ/mol | TDAs | Bogdanov, Peschke, et al., 1999 | gas phase; B |
ΔrH° | 58.2 ± 4.2 | kJ/mol | TDAs | Hiraoka and Yamabe, 1991 | gas phase; B,M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 73.6 | J/mol*K | PHPMS | Hiraoka and Yamabe, 1991 | gas phase; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 33.5 ± 0.42 | kJ/mol | TDAs | Bogdanov, Peschke, et al., 1999 | gas phase; B |
ΔrG° | 36. ± 8.4 | kJ/mol | TDAs | Hiraoka and Yamabe, 1991 | gas phase; B |
ΔrG° | 35. ± 8.4 | kJ/mol | IMRE | Tanabe, Morgon, et al., 1996 | gas phase; Anchored to H2O..Br- of Hiraoka, Mizure, et al., 19882; B |
By formula: C3H9Si+ + CH4O = (C3H9Si+ • CH4O)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 164. | kJ/mol | PHPMS | Wojtyniak and Stone, 1986 | gas phase; switching reaction,Thermochemical ladder((CH3)3Si+)H2O, Entropy change calculated or estimated; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 124. | J/mol*K | N/A | Wojtyniak and Stone, 1986 | gas phase; switching reaction,Thermochemical ladder((CH3)3Si+)H2O, Entropy change calculated or estimated; M |
Free energy of reaction
ΔrG° (kJ/mol) | T (K) | Method | Reference | Comment |
---|---|---|---|---|
106. | 468. | PHPMS | Wojtyniak and Stone, 1986 | gas phase; switching reaction,Thermochemical ladder((CH3)3Si+)H2O, Entropy change calculated or estimated; M |
By formula: Na+ + CH4O = (Na+ • CH4O)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 97.1 ± 5.4 | kJ/mol | CIDC | Amicangelo and Armentrout, 2001 | Anchor NH3=24.41; RCD |
ΔrH° | 91.6 ± 5.9 | kJ/mol | CIDT | Armentrout and Rodgers, 2000 | RCD |
ΔrH° | 100. ± 0.8 | kJ/mol | HPMS | Hoyau, Norrman, et al., 1999 | RCD |
ΔrH° | 111. ± 0.8 | kJ/mol | HPMS | Guo, Conklin, et al., 1989 | gas phase; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 85800. | J/mol*K | HPMS | Hoyau, Norrman, et al., 1999 | RCD |
ΔrS° | 102. | J/mol*K | HPMS | Guo, Conklin, et al., 1989 | gas phase; M |
Free energy of reaction
ΔrG° (kJ/mol) | T (K) | Method | Reference | Comment |
---|---|---|---|---|
72.4 | 298. | IMRE | McMahon and Ohanessian, 2000 | Anchor alanine=39.89; RCD |
By formula: (Cl- • 4CH4O) + CH4O = (Cl- • 5CH4O)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 38. ± 4.2 | kJ/mol | TDAs | Hiraoka and Mizuse, 1987 | gas phase; B,M |
ΔrH° | 43.9 ± 2.1 | kJ/mol | N/A | Yamdagni, Payzant, et al., 1973 | gas phase; B,M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 90.8 | J/mol*K | PHPMS | Hiraoka and Mizuse, 1987 | gas phase; M |
ΔrS° | 107. | J/mol*K | PHPMS | Yamdagni, Payzant, et al., 1973 | gas phase; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 11. ± 4.2 | kJ/mol | TDAs | Hiraoka and Mizuse, 1987 | gas phase; B |
ΔrG° | 12.1 ± 0.42 | kJ/mol | TDAs | Yamdagni, Payzant, et al., 1973 | gas phase; B |
By formula: H2O + C5H12O2 = 2CH4O + C3H6O
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 20.3 ± 0.04 | kJ/mol | Cm | Wiberg, Morgan, et al., 1994 | liquid phase; ALS |
ΔrH° | 20.43 ± 0.04 | kJ/mol | Cm | Wiberg and Squires, 1979 | liquid phase; Heat of hydrolysis; ALS |
ΔrH° | 20.433 ± 0.028 | kJ/mol | Cm | Wiberg and Squires, 1979, 2 | liquid phase; solvent: Water; Hydrolysis; ALS |
ΔrH° | -16.5 ± 0.2 | kJ/mol | Cm | Stern and Dorer, 1962 | liquid phase; Reanalyzed by Cox and Pilcher, 1970, Original value = 15.4 ± 0.2 kJ/mol; Heat of hydrolysis; ALS |
By formula: (CH5O+ • CH4O) + CH4O = (CH5O+ • 2CH4O)
Bond type: Hydrogen bonds of the type OH-O between organics
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 88.7 | kJ/mol | PHPMS | Meot-Ner (Mautner), 1992 | gas phase; M |
ΔrH° | 87.9 | kJ/mol | PHPMS | Meot-Ner(Mautner), 1986 | gas phase; M |
ΔrH° | 89.1 | kJ/mol | PHPMS | Grimsrud and Kebarle, 1973 | gas phase; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 113. | J/mol*K | PHPMS | Meot-Ner (Mautner), 1992 | gas phase; M |
ΔrS° | 108. | J/mol*K | PHPMS | Meot-Ner(Mautner), 1986 | gas phase; M |
ΔrS° | 118. | J/mol*K | PHPMS | Grimsrud and Kebarle, 1973 | gas phase; M |
By formula: C5H11O- + CH4O = (C5H11O- • CH4O)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 108. ± 12. | kJ/mol | N/A | Caldwell, Rozeboom, et al., 1984 | gas phase; Reanchored to average data from Paul and Kebarle, 1990 and Meot-ner and Sieck, 1986.; value altered from reference due to change in acidity scale; B |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 71.1 ± 8.4 | kJ/mol | IMRE | Caldwell, Rozeboom, et al., 1984 | gas phase; Reanchored to average data from Paul and Kebarle, 1990 and Meot-ner and Sieck, 1986.; value altered from reference due to change in acidity scale; B |
By formula: C6H11S2- + CH4O = (C6H11S2- • CH4O)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 92. ± 10. | kJ/mol | N/A | Caldwell, Rozeboom, et al., 1984 | gas phase; Reanchored to average data from Paul and Kebarle, 1990 and Meot-ner and Sieck, 1986.; value altered from reference due to change in acidity scale; B |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 55.2 ± 6.7 | kJ/mol | IMRE | Caldwell, Rozeboom, et al., 1984 | gas phase; Reanchored to average data from Paul and Kebarle, 1990 and Meot-ner and Sieck, 1986.; value altered from reference due to change in acidity scale; B |
By formula: (Cu+ • CH4O) + CH4O = (Cu+ • 2CH4O)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 57.7 | kJ/mol | HPMS | El-Shall, Schriver, et al., 1989 | gas phase; Entropy change calculated or estimated, Cu+ from laser desorption; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 100. | J/mol*K | N/A | El-Shall, Schriver, et al., 1989 | gas phase; Entropy change calculated or estimated, Cu+ from laser desorption; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 26. | kJ/mol | HPMS | El-Shall, Schriver, et al., 1989 | gas phase; Entropy change calculated or estimated, Cu+ from laser desorption; M |
(CH5O+ • 2 • 3) + = (CH5O+ • 3 • 3)
By formula: (CH5O+ • 2H2O • 3CH4O) + H2O = (CH5O+ • 3H2O • 3CH4O)
Bond type: Hydrogen bond (positive ion to hydride)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 38. | kJ/mol | PHPMS | Meot-Ner(Mautner), 1986 | gas phase; n, Entropy change calculated or estimated; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 92. | J/mol*K | N/A | Meot-Ner(Mautner), 1986 | gas phase; n, Entropy change calculated or estimated; M |
Free energy of reaction
ΔrG° (kJ/mol) | T (K) | Method | Reference | Comment |
---|---|---|---|---|
13. | 272. | PHPMS | Meot-Ner(Mautner), 1986 | gas phase; n, Entropy change calculated or estimated; M |
(CH5O+ • 3 • 2) + = (CH5O+ • 4 • 2)
By formula: (CH5O+ • 3H2O • 2CH4O) + H2O = (CH5O+ • 4H2O • 2CH4O)
Bond type: Hydrogen bond (positive ion to hydride)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 39. | kJ/mol | PHPMS | Meot-Ner(Mautner), 1986 | gas phase; n, Entropy change calculated or estimated; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 92. | J/mol*K | N/A | Meot-Ner(Mautner), 1986 | gas phase; n, Entropy change calculated or estimated; M |
Free energy of reaction
ΔrG° (kJ/mol) | T (K) | Method | Reference | Comment |
---|---|---|---|---|
13. | 272. | PHPMS | Meot-Ner(Mautner), 1986 | gas phase; n, Entropy change calculated or estimated; M |
(CH5O+ • 4 • ) + = (CH5O+ • 5 • )
By formula: (CH5O+ • 4H2O • CH4O) + H2O = (CH5O+ • 5H2O • CH4O)
Bond type: Hydrogen bond (positive ion to hydride)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 39. | kJ/mol | PHPMS | Meot-Ner(Mautner), 1986 | gas phase; n, Entropy change calculated or estimated; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 92. | J/mol*K | N/A | Meot-Ner(Mautner), 1986 | gas phase; n, Entropy change calculated or estimated; M |
Free energy of reaction
ΔrG° (kJ/mol) | T (K) | Method | Reference | Comment |
---|---|---|---|---|
15. | 269. | PHPMS | Meot-Ner(Mautner), 1986 | gas phase; n, Entropy change calculated or estimated; M |
By formula: (CH5O+ • H2O) + CH4O = (CH5O+ • CH4O • H2O)
Bond type: Hydrogen bonds of the type OH-O between organics
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 103. | kJ/mol | PHPMS | Meot-Ner(Mautner), 1986 | gas phase; n, Entropy change calculated or estimated; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 120. | J/mol*K | N/A | Meot-Ner(Mautner), 1986 | gas phase; n, Entropy change calculated or estimated; M |
Free energy of reaction
ΔrG° (kJ/mol) | T (K) | Method | Reference | Comment |
---|---|---|---|---|
48.5 | 452. | PHPMS | Meot-Ner(Mautner), 1986 | gas phase; n, Entropy change calculated or estimated; M |
By formula: C6H5NO2- + CH4O = (C6H5NO2- • CH4O)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 63.18 ± 0.84 | kJ/mol | TDAs | Sieck, 1985 | gas phase; B,M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 109. | J/mol*K | PHPMS | Sieck, 1985 | gas phase; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 30.5 ± 1.7 | kJ/mol | TDAs | Sieck, 1985 | gas phase; B |
ΔrG° | 26. ± 6.7 | kJ/mol | IMRE | Chowdhury, Grimsrud, et al., 1987 | gas phase; Free energy affinity at 70°C.; B |
Free energy of reaction
ΔrG° (kJ/mol) | T (K) | Method | Reference | Comment |
---|---|---|---|---|
26. | 343. | PHPMS | Chowdhury, 1987 | gas phase; M |
By formula: Cu+ + CH4O = (Cu+ • CH4O)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 56.1 | kJ/mol | HPMS | El-Shall, Schriver, et al., 1989 | gas phase; Entropy change calculated or estimated, Cu+ from laser desorption; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 100. | J/mol*K | N/A | El-Shall, Schriver, et al., 1989 | gas phase; Entropy change calculated or estimated, Cu+ from laser desorption; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 25. | kJ/mol | HPMS | El-Shall, Schriver, et al., 1989 | gas phase; Entropy change calculated or estimated, Cu+ from laser desorption; M |
By formula: (F- • CH4O) + CH4O = (F- • 2CH4O)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 84.9 ± 1.3 | kJ/mol | TDAs | Bogdanov, Peschke, et al., 1999 | gas phase; B |
ΔrH° | 80.8 ± 4.2 | kJ/mol | TDAs | Hiraoka and Yamabe, 1991 | gas phase; B,M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 97.1 | J/mol*K | PHPMS | Hiraoka and Yamabe, 1991 | gas phase; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 54.27 | kJ/mol | TDAs | Bogdanov, Peschke, et al., 1999 | gas phase; B |
ΔrG° | 51.9 ± 8.4 | kJ/mol | TDAs | Hiraoka and Yamabe, 1991 | gas phase; B |
By formula: (F- • 2CH4O) + CH4O = (F- • 3CH4O)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 63.2 ± 2.5 | kJ/mol | TDAs | Bogdanov, Peschke, et al., 1999 | gas phase; B |
ΔrH° | 60.7 ± 4.2 | kJ/mol | TDAs | Hiraoka and Yamabe, 1991 | gas phase; B,M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 88.7 | J/mol*K | PHPMS | Hiraoka and Yamabe, 1991 | gas phase; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 33.7 | kJ/mol | TDAs | Bogdanov, Peschke, et al., 1999 | gas phase; B |
ΔrG° | 34. ± 8.4 | kJ/mol | TDAs | Hiraoka and Yamabe, 1991 | gas phase; B |
By formula: (Br- • 2CH4O) + CH4O = (Br- • 3CH4O)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 39.7 ± 2.1 | kJ/mol | TDAs | Bogdanov, Peschke, et al., 1999 | gas phase; B |
ΔrH° | 44.4 ± 4.2 | kJ/mol | TDAs | Hiraoka and Yamabe, 1991 | gas phase; B,M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 90.4 | J/mol*K | PHPMS | Hiraoka and Yamabe, 1991 | gas phase; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 17.8 | kJ/mol | TDAs | Bogdanov, Peschke, et al., 1999 | gas phase; B |
ΔrG° | 18. ± 8.4 | kJ/mol | TDAs | Hiraoka and Yamabe, 1991 | gas phase; B |
By formula: (Br- • CH4O) + CH4O = (Br- • 2CH4O)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 50.21 ± 0.84 | kJ/mol | TDAs | Bogdanov, Peschke, et al., 1999 | gas phase; B |
ΔrH° | 52.3 ± 4.2 | kJ/mol | TDAs | Hiraoka and Yamabe, 1991 | gas phase; B,M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 86.6 | J/mol*K | PHPMS | Hiraoka and Yamabe, 1991 | gas phase; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 23.5 | kJ/mol | TDAs | Bogdanov, Peschke, et al., 1999 | gas phase; B |
ΔrG° | 26. ± 8.4 | kJ/mol | TDAs | Hiraoka and Yamabe, 1991 | gas phase; B |
By formula: (I- • 2CH4O) + CH4O = (I- • 3CH4O)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 32.2 ± 2.5 | kJ/mol | TDAs | Bogdanov, Peschke, et al., 1999 | gas phase; B |
ΔrH° | 41. ± 4.2 | kJ/mol | TDAs | Hiraoka and Yamabe, 1991 | gas phase; B,M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 93.7 | J/mol*K | PHPMS | Hiraoka and Yamabe, 1991 | gas phase; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 14.3 | kJ/mol | TDAs | Bogdanov, Peschke, et al., 1999 | gas phase; B |
ΔrG° | 13. ± 8.4 | kJ/mol | TDAs | Hiraoka and Yamabe, 1991 | gas phase; B |
By formula: (I- • CH4O) + CH4O = (I- • 2CH4O)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 39.7 ± 0.84 | kJ/mol | TDAs | Bogdanov, Peschke, et al., 1999 | gas phase; B |
ΔrH° | 46.4 ± 4.2 | kJ/mol | TDAs | Hiraoka and Yamabe, 1991 | gas phase; B,M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 94.6 | J/mol*K | PHPMS | Hiraoka and Yamabe, 1991 | gas phase; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 17.8 | kJ/mol | TDAs | Bogdanov, Peschke, et al., 1999 | gas phase; B |
ΔrG° | 18. ± 8.4 | kJ/mol | TDAs | Hiraoka and Yamabe, 1991 | gas phase; B |
By formula: (Cl- • 10CH4O) + CH4O = (Cl- • 11CH4O)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 31. ± 4.2 | kJ/mol | TDAs | Hiraoka and Mizuse, 1987 | gas phase; Estimated entropy; single temperature measurement; B,M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 84. | J/mol*K | N/A | Hiraoka and Mizuse, 1987 | gas phase; Entropy change calculated or estimated; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 5.4 ± 4.2 | kJ/mol | TDAs | Hiraoka and Mizuse, 1987 | gas phase; Estimated entropy; single temperature measurement; B |
By formula: (Na+ • CH4O) + CH4O = (Na+ • 2CH4O)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 85.8 ± 5.9 | kJ/mol | CIDC | Amicangelo and Armentrout, 2001 | Anchor NH3=24.41; RCD |
ΔrH° | 89.5 ± 6.7 | kJ/mol | CIDC | Amicangelo and Armentrout, 2001 | Anchor NH3=24.41; RCD |
ΔrH° | 85.8 ± 6.7 | kJ/mol | CIDC | Amicangelo and Armentrout, 2001 | Anchor NH3=24.41; RCD |
ΔrH° | 84.5 ± 0.8 | kJ/mol | HPMS | Guo, Conklin, et al., 1989 | gas phase; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 90.8 | J/mol*K | HPMS | Guo, Conklin, et al., 1989 | gas phase; M |
By formula: H4ClO2- + CH4O + 2H2O = CH8ClO3-
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 43.51 ± 0.84 | kJ/mol | TDAs | Evans and Keesee, 1991 | gas phase; B |
ΔrH° | 47.7 ± 1.3 | kJ/mol | TDAs | Evans and Keesee, 1991 | gas phase; For solvation by MeOH of core ion; B |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 24.3 | kJ/mol | TDAs | Evans and Keesee, 1991 | gas phase; B |
ΔrG° | 25.1 | kJ/mol | TDAs | Evans and Keesee, 1991 | gas phase; For solvation by MeOH of core ion; B |
By formula: (CH5O+ • 2CH4O) + C2H6O = (CH5O+ • C2H6O • 2CH4O)
Bond type: Hydrogen bonds of the type OH-O between organics
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 72.0 | kJ/mol | PHPMS | Hiraoka, Grimsrud, et al., 1974 | gas phase; n, note proton affinities, core ion may be (CH3)2OH+; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 120. | J/mol*K | PHPMS | Hiraoka, Grimsrud, et al., 1974 | gas phase; n, note proton affinities, core ion may be (CH3)2OH+; M |
By formula: (CH5O+ • 3CH4O) + C2H6O = (CH5O+ • C2H6O • 3CH4O)
Bond type: Hydrogen bonds of the type OH-O between organics
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 57.3 | kJ/mol | PHPMS | Hiraoka, Grimsrud, et al., 1974 | gas phase; n, note proton affinities, core ion may be (CH3)2OH+; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 129. | J/mol*K | PHPMS | Hiraoka, Grimsrud, et al., 1974 | gas phase; n, note proton affinities, core ion may be (CH3)2OH+; M |
By formula: (CH5O+ • 2CH4O) + CH4O = (CH5O+ • 3CH4O)
Bond type: Hydrogen bonds of the type OH-O between organics
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 58.6 | kJ/mol | PHPMS | Meot-Ner (Mautner), 1992 | gas phase; M |
ΔrH° | 67.4 | kJ/mol | PHPMS | Grimsrud and Kebarle, 1973 | gas phase; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 100. | J/mol*K | PHPMS | Meot-Ner (Mautner), 1992 | gas phase; M |
ΔrS° | 121. | J/mol*K | PHPMS | Grimsrud and Kebarle, 1973 | gas phase; M |
By formula: (CH5O+ • 3CH4O) + CH4O = (CH5O+ • 4CH4O)
Bond type: Hydrogen bonds of the type OH-O between organics
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 47.3 | kJ/mol | PHPMS | Meot-Ner (Mautner), 1992 | gas phase; M |
ΔrH° | 56.5 | kJ/mol | PHPMS | Grimsrud and Kebarle, 1973 | gas phase; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 93.3 | J/mol*K | PHPMS | Meot-Ner (Mautner), 1992 | gas phase; M |
ΔrS° | 120. | J/mol*K | PHPMS | Grimsrud and Kebarle, 1973 | gas phase; M |
By formula: (CH5O+ • 4CH4O) + CH4O = (CH5O+ • 5CH4O)
Bond type: Hydrogen bonds of the type OH-O between organics
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 42.7 | kJ/mol | PHPMS | Meot-Ner (Mautner), 1992 | gas phase; M |
ΔrH° | 52.3 | kJ/mol | PHPMS | Grimsrud and Kebarle, 1973 | gas phase; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 98.3 | J/mol*K | PHPMS | Meot-Ner (Mautner), 1992 | gas phase; M |
ΔrS° | 130. | J/mol*K | PHPMS | Grimsrud and Kebarle, 1973 | gas phase; M |
By formula: (CH5O+ • CH4O) + C2H6O = (CH5O+ • C2H6O • CH4O)
Bond type: Hydrogen bonds of the type OH-O between organics
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 91.6 | kJ/mol | PHPMS | Hiraoka, Grimsrud, et al., 1974 | gas phase; n, note proton affinities, core ion may be (CH3)2OH+; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 105. | J/mol*K | PHPMS | Hiraoka, Grimsrud, et al., 1974 | gas phase; n, note proton affinities, core ion may be (CH3)2OH+; M |
By formula: (CH5O+ • 5CH4O) + CH4O = (CH5O+ • 6CH4O)
Bond type: Hydrogen bonds of the type OH-O between organics
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 39. | kJ/mol | PHPMS | Meot-Ner (Mautner), 1992 | gas phase; M |
ΔrH° | 49.8 | kJ/mol | PHPMS | Grimsrud and Kebarle, 1973 | gas phase; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 98.3 | J/mol*K | PHPMS | Meot-Ner (Mautner), 1992 | gas phase; M |
ΔrS° | 138. | J/mol*K | PHPMS | Grimsrud and Kebarle, 1973 | gas phase; M |
By formula: (CH5O+ • 6CH4O) + CH4O = (CH5O+ • 7CH4O)
Bond type: Hydrogen bonds of the type OH-O between organics
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 38. | kJ/mol | PHPMS | Meot-Ner (Mautner), 1992 | gas phase; M |
ΔrH° | 50.2 | kJ/mol | PHPMS | Grimsrud and Kebarle, 1973 | gas phase; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 108. | J/mol*K | PHPMS | Meot-Ner (Mautner), 1992 | gas phase; M |
ΔrS° | 149. | J/mol*K | PHPMS | Grimsrud and Kebarle, 1973 | gas phase; M |
By formula: (F- • 11CH4O) + CH4O = (F- • 12CH4O)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 36. ± 4.2 | kJ/mol | TDAs | Hiraoka and Yamabe, 1991 | gas phase; Entropy estimated.; B,M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 100. | J/mol*K | N/A | Hiraoka and Yamabe, 1991 | gas phase; Entropy change calculated or estimated; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 4.6 ± 8.4 | kJ/mol | TDAs | Hiraoka and Yamabe, 1991 | gas phase; Entropy estimated.; B |
Gas phase ion energetics data
Go To: Top, Gas phase thermochemistry data, Condensed phase thermochemistry data, Reaction thermochemistry data, References, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Data evaluated as indicated in comments:
HL - Edward P. Hunter and Sharon G. Lias
L - Sharon G. Lias
Data compiled as indicated in comments:
B - John E. Bartmess
LL - Sharon G. Lias and Joel F. Liebman
LBLHLM - Sharon G. Lias, John E. Bartmess, Joel F. Liebman, John L. Holmes, Rhoda D. Levin, and W. Gary Mallard
LLK - Sharon G. Lias, Rhoda D. Levin, and Sherif A. Kafafi
RDSH - Henry M. Rosenstock, Keith Draxl, Bruce W. Steiner, and John T. Herron
View reactions leading to CH4O+ (ion structure unspecified)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
IE (evaluated) | 10.84 ± 0.01 | eV | N/A | N/A | L |
Quantity | Value | Units | Method | Reference | Comment |
Proton affinity (review) | 754.3 | kJ/mol | N/A | Hunter and Lias, 1998 | HL |
Quantity | Value | Units | Method | Reference | Comment |
Gas basicity | 724.5 | kJ/mol | N/A | Hunter and Lias, 1998 | HL |
Ionization energy determinations
Appearance energy determinations
De-protonation reactions
CH3O- + =
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 1597. ± 8. | kJ/mol | AVG | N/A | Average of 6 values; Individual data points |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 1573.3 ± 2.6 | kJ/mol | H-TS | Nee, Osterwalder, et al., 2006 | gas phase; B |
ΔrG° | 1573.4 ± 2.3 | kJ/mol | H-TS | Osborn, Leahy, et al., 1998 | gas phase; B |
ΔrG° | 1565. ± 8.4 | kJ/mol | IMRE | Bartmess, Scott, et al., 1979 | gas phase; The acidity is 1.2 kcal/mol stronger than that from the D-EA cycle, due to the multi-compound fit for the acidity scale.; value altered from reference due to change in acidity scale; B |
ΔrG° | 1567. ± 8.8 | kJ/mol | H-TS | Haas and Harrison, 1993 | gas phase; Both metastable and 50 eV collision energy.; B |
ΔrG° | 1569.4 ± 2.5 | kJ/mol | TDEq | Meot-ner and Sieck, 1986 | gas phase; Experimental entropy: 21.5 eu, 0.6 less than H2O; B |
References
Go To: Top, Gas phase thermochemistry data, Condensed phase thermochemistry data, Reaction thermochemistry data, Gas phase ion energetics data, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
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Notes
Go To: Top, Gas phase thermochemistry data, Condensed phase thermochemistry data, Reaction thermochemistry data, Gas phase ion energetics data, References
- Symbols used in this document:
AE Appearance energy Cp,gas Constant pressure heat capacity of gas Cp,liquid Constant pressure heat capacity of liquid Cp,solid Constant pressure heat capacity of solid IE (evaluated) Recommended ionization energy S°liquid Entropy of liquid at standard conditions S°solid,1 bar Entropy of solid at standard conditions (1 bar) T Temperature ΔcH°gas Enthalpy of combustion of gas at standard conditions ΔcH°liquid Enthalpy of combustion of liquid at standard conditions ΔfH°gas Enthalpy of formation of gas at standard conditions ΔfH°liquid Enthalpy of formation of liquid at standard conditions ΔrG° Free energy of reaction at standard conditions ΔrH° Enthalpy of reaction at standard conditions ΔrS° Entropy of reaction at standard conditions - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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