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Formaldehyde

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Gas phase thermochemistry data

Go To: Top, Phase change data, Reaction thermochemistry data, Gas phase ion energetics data, Ion clustering data, IR Spectrum, Mass spectrum (electron ionization), Vibrational and/or electronic energy levels, 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
GT - Glushko Thermocenter, Russian Academy of Sciences, Moscow

Quantity Value Units Method Reference Comment
Deltafgas-115.90kJ/molReviewChase, 1998Data last reviewed in March, 1961
Deltafgas-108.6 ± 0.46kJ/molCmFletcher and Pilcher, 1970ALS
Quantity Value Units Method Reference Comment
Deltacgas-570.78 ± 0.42kJ/molCmFletcher and Pilcher, 1970Corresponding «DELTA»fgas = -108.6 kJ/mol (simple calculation by NIST; no Washburn corrections); ALS
Deltacgas-561.1kJ/molCcbWartenberg and Lerner-Steinberg, 1925Gas phase; Corresponding «DELTA»fgas = -118. kJ/mol (simple calculation by NIST; no Washburn corrections); ALS
Quantity Value Units Method Reference Comment
gas,1 bar218.95J/mol*KReviewChase, 1998Data last reviewed in March, 1961

Constant pressure heat capacity of gas

Cp,gas (J/mol*K) Temperature (K) Reference Comment
33.2650.Thermodynamics Research Center, 1997p=1 bar. Recommended entropies and heat capacities are in good agreement with other statistically calculated values [ Thompson, 1941, Pillai M.G.K., 1961, Gurvich, Veyts, et al., 1989]. Please also see Chao J., 1980, Chao J., 1986.; GT
33.26100.
33.28150.
33.50200.
34.70273.15
35.39 ± 0.02298.15
35.44300.
39.24400.
43.74500.
48.18600.
52.28700.
55.94800.
59.16900.
61.951000.
64.371100.
66.451200.
68.251300.
69.801400.
71.151500.
73.791750.
75.682000.
77.082250.
78.132500.
78.932750.
79.563000.

Gas Phase Heat Capacity (Shomate Equation)

Cp° = A + B*t + C*t2 + D*t3 + E/t2
H° − H°298.15= A*t + B*t2/2 + C*t3/3 + D*t4/4 − E/t + F − H
S° = A*ln(t) + B*t + C*t2/2 + D*t3/3 − E/(2*t2) + G
    Cp = heat capacity (J/mol*K)
    H° = standard enthalpy (kJ/mol)
    S° = standard entropy (J/mol*K)
    t = temperature (K) / 1000.

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View table.

Temperature (K) 298. - 1200.1200. - 6000.
A 5.19376771.35268
B 93.232496.174497
C -44.85457-1.191090
D 7.8822790.079564
E 0.551175-15.58917
F -119.3591-170.6327
G 202.4663262.3180
H -115.8972-115.8972
ReferenceChase, 1998Chase, 1998
Comment Data last reviewed in March, 1961 Data last reviewed in March, 1961

Phase change data

Go To: Top, Gas phase thermochemistry data, Reaction thermochemistry data, Gas phase ion energetics data, Ion clustering data, IR Spectrum, Mass spectrum (electron ionization), Vibrational and/or electronic energy levels, 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:
TRC - Thermodynamics Research Center, NIST Boulder Laboratories, Chris Muzny, director
AC - William E. Acree, Jr., James S. Chickos

Quantity Value Units Method Reference Comment
Tboil254.05KN/AAnonymous, 1968Uncertainty assigned by TRC = 0.5 K; TRC
Tboil253.85KN/ASpence and Wild, 1935Uncertainty assigned by TRC = 0.2 K; TRC
Quantity Value Units Method Reference Comment
Tfus156.15KN/AAnonymous, 1968Uncertainty assigned by TRC = 1. K; TRC
Tfus181.KN/AAnonymous, 1958Uncertainty assigned by TRC = 4. K; TRC
Tfus181.KN/AHarries, 1901Uncertainty assigned by TRC = 6. K; TRC
Quantity Value Units Method Reference Comment
Ttriple155.1KN/ASpence and Wild, 1935Uncertainty assigned by TRC = 0.3 K; TRC

Enthalpy of vaporization

DeltavapH (kJ/mol) Temperature (K) Method Reference Comment
24.3236.AStephenson and Malanowski, 1987Based on data from 184. - 251. K.; AC
24.2236.N/ASpence and Wild, 1935, 2Based on data from 173. - 251. K. See also Stephenson and Malanowski, 1987.; AC

Antoine Equation Parameters

log10(P) = A − (B / (T + C))
    P = vapor pressure (bar)
    T = temperature (K)

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Temperature (K) A B C Reference Comment
163.76 - 250.864.28176959.43-29.758Spence and Wild, 1935, 3Coefficents calculated by NIST from author's data.

Enthalpy of fusion

DeltafusH (kJ/mol) Temperature (K) Reference Comment
7.53155.Vasil'ev and Lebedev, 1998AC

In addition to the Thermodynamics Research Center (TRC) data available from this site, much more physical and chemical property data is available from the following TRC products:


Reaction thermochemistry data

Go To: Top, Gas phase thermochemistry data, Phase change data, Gas phase ion energetics data, Ion clustering data, IR Spectrum, Mass spectrum (electron ionization), Vibrational and/or electronic energy levels, 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:
M - Michael M. Meot-Ner (Mautner) and Sharon G. Lias
B - John E. Bartmess
ALS - Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
RCD - Robert C. Dunbar

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.

Individual Reactions

CH2OH+ + Formaldehyde = (CH2OH+ bullet Formaldehyde)

By formula: CH3O+ + CH2O = (CH3O+ bullet CH2O)

Bond type: Hydrogen bonds of the type OH-O between organics

Quantity Value Units Method Reference Comment
Deltar116.kJ/molICRLarson and McMahon, 1982gas phase; switching reaction(H3O+)H2O, Entropy change calculated or estimated; Cunningham, Payzant, et al., 1972, Lias, Liebman, et al., 1984, Keesee and Castleman, 1986; M
Deltar123.kJ/molFAFehsenfeld, Dotan, et al., 1978gas phase; From thermochemical cycle,switching reaction(H3O+)H2O; Lias, Liebman, et al., 1984, Meot-Ner (Mautner), 1992; M
Deltar116.kJ/molICRLarson, Clair, et al., 1982gas phase; From thermochemical cycle,switching reaction(H2O/H2CO), Entropy change calculated or estimated; Cunningham, Payzant, et al., 1972, Lias, Liebman, et al., 1984; M
Quantity Value Units Method Reference Comment
Deltar111.J/mol*KN/ALarson and McMahon, 1982gas phase; switching reaction(H3O+)H2O, Entropy change calculated or estimated; Cunningham, Payzant, et al., 1972, Lias, Liebman, et al., 1984, Keesee and Castleman, 1986; M
Deltar115.J/mol*KFAFehsenfeld, Dotan, et al., 1978gas phase; From thermochemical cycle,switching reaction(H3O+)H2O; Lias, Liebman, et al., 1984, Meot-Ner (Mautner), 1992; M
Deltar111.J/mol*KN/ALarson, Clair, et al., 1982gas phase; From thermochemical cycle,switching reaction(H2O/H2CO), Entropy change calculated or estimated; Cunningham, Payzant, et al., 1972, Lias, Liebman, et al., 1984; M
Quantity Value Units Method Reference Comment
Deltar82.8kJ/molICRLarson and McMahon, 1982gas phase; switching reaction(H3O+)H2O, Entropy change calculated or estimated; Cunningham, Payzant, et al., 1972, Lias, Liebman, et al., 1984, Keesee and Castleman, 1986; M
Deltar82.8kJ/molICRLarson, Clair, et al., 1982gas phase; From thermochemical cycle,switching reaction(H2O/H2CO), Entropy change calculated or estimated; Cunningham, Payzant, et al., 1972, Lias, Liebman, et al., 1984; M

Lithium ion (1+) + Formaldehyde = (Lithium ion (1+) bullet Formaldehyde)

By formula: Li+ + CH2O = (Li+ bullet CH2O)

Quantity Value Units Method Reference Comment
Deltar151.kJ/molICRWoodin and Beauchamp, 1978gas phase; switching reaction(Li+)H2O, Entropy change calculated or estimated; Dzidic and Kebarle, 1970 interpolated; M
Deltar150.kJ/molICRStaley and Beauchamp, 1975gas phase; switching reaction(Li+)H2O, from graph; Dzidic and Kebarle, 1970 extrapolated; M
Quantity Value Units Method Reference Comment
Deltar110.J/mol*KN/AWoodin and Beauchamp, 1978gas phase; switching reaction(Li+)H2O, Entropy change calculated or estimated; Dzidic and Kebarle, 1970 interpolated; M
Quantity Value Units Method Reference Comment
Deltar118.kJ/molICRWoodin and Beauchamp, 1978gas phase; switching reaction(Li+)H2O, Entropy change calculated or estimated; Dzidic and Kebarle, 1970 interpolated; M

(CH3O- bullet 4294967295Formaldehyde) + Formaldehyde = CH3O-

By formula: (CH3O- bullet 4294967295CH2O) + CH2O = CH3O-

Quantity Value Units Method Reference Comment
Deltar166.9 ± 2.1kJ/molN/ANee, Osterwalder, et al., 2006gas phase; B
Deltar171. ± 4.6kJ/molTherOsborn, Leahy, et al., 1998gas phase; B
Deltar175. ± 9.2kJ/molTherBartmess, Scott, et al., 1979gas 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

CHO- + Hydrogen cation = Formaldehyde

By formula: CHO- + H+ = CH2O

Quantity Value Units Method Reference Comment
Deltar1650.7 ± 0.96kJ/molD-EAMurray, Miller, et al., 1986gas phase; B
Quantity Value Units Method Reference Comment
Deltar1617.7 ± 1.7kJ/molH-TSMurray, Miller, et al., 1986gas phase; B
Deltar1648. ± 19.kJ/molIMRBKarpas and Klein, 1975gas phase; B

CH2N+ + Formaldehyde = (CH2N+ bullet Formaldehyde)

By formula: CH2N+ + CH2O = (CH2N+ bullet CH2O)

Bond type: Hydrogen bonds of the type NH+-O between organics

Quantity Value Units Method Reference Comment
Deltar91.2kJ/molFATanaka, Mackay, et al., 1978gas phase; switching reaction(HCNH+)HCN; Meot-Ner (Mautner), 1978; M

(dimethylamino)methanol = Dimethylamine + Formaldehyde

By formula: C3H9NO = C2H7N + CH2O

Quantity Value Units Method Reference Comment
Deltar126. ± 0.8kJ/molCmRogers and Rapiejko, 1974liquid phase; Heat of formation derived by 77PED/RYL; ALS

Methylal + Water = Formaldehyde + 2Methyl Alcohol

By formula: C3H8O2 + H2O = CH2O + 2CH4O

Quantity Value Units Method Reference Comment
Deltar77.19 ± 0.50kJ/molCmBirley and Skinner, 1970liquid phase; Heat of hydrolysis; ALS

Formaldehyde + Urea, N,N-dimethyl- = Urea, 3-(hydroxymethyl)-1,1-dimethyl-

By formula: CH2O + C3H8N2O = C4H10N2O2

Quantity Value Units Method Reference Comment
Deltar-20. ± 0.8kJ/molKinPerepelkova, Igranova, et al., 1981liquid phase; solvent: Phosphate buffer; ALS

2Dimethylamine + Formaldehyde = Methanediamine, N,N,N',N'-tetramethyl- + Water

By formula: 2C2H7N + CH2O = C5H14N2 + H2O

Quantity Value Units Method Reference Comment
Deltar-191. ± 3.kJ/molCmRogers and Rapiejko, 1974gas phase; ALS

(Iron ion (1+) bullet 2Formaldehyde) + Formaldehyde = (Iron ion (1+) bullet 3Formaldehyde)

By formula: (Fe+ bullet 2CH2O) + CH2O = (Fe+ bullet 3CH2O)

Quantity Value Units Method Reference Comment
Deltar76.1 ± 4.2kJ/molCIDTRodgers and Armentrout, 2000RCD

(Iron ion (1+) bullet 3Formaldehyde) + Formaldehyde = (Iron ion (1+) bullet 4Formaldehyde)

By formula: (Fe+ bullet 3CH2O) + CH2O = (Fe+ bullet 4CH2O)

Quantity Value Units Method Reference Comment
Deltar50.2 ± 7.1kJ/molCIDTRodgers and Armentrout, 2000RCD

(Iron ion (1+) bullet Formaldehyde) + Formaldehyde = (Iron ion (1+) bullet 2Formaldehyde)

By formula: (Fe+ bullet CH2O) + CH2O = (Fe+ bullet 2CH2O)

Quantity Value Units Method Reference Comment
Deltar164. ± 4.2kJ/molCIDTRodgers and Armentrout, 2000RCD

Dimethylamine + Formaldehyde = (dimethylamino)methanol

By formula: C2H7N + CH2O = C3H9NO

Quantity Value Units Method Reference Comment
Deltar-126. ± 0.8kJ/molCmRogers and Rapiejko, 1974gas phase; ALS

Hydrogen + Carbon monoxide = Formaldehyde

By formula: H2 + CO = CH2O

Quantity Value Units Method Reference Comment
Deltar-12.1kJ/molEqkNewton and Dodge, 1933gas phase; ALS

Iron ion (1+) + Formaldehyde = (Iron ion (1+) bullet Formaldehyde)

By formula: Fe+ + CH2O = (Fe+ bullet CH2O)

Quantity Value Units Method Reference Comment
Deltar138. ± 7.1kJ/molCIDTRodgers and Armentrout, 2000RCD

Aluminum ion (1+) + Formaldehyde = (Aluminum ion (1+) bullet Formaldehyde)

By formula: Al+ + CH2O = (Al+ bullet CH2O)

Quantity Value Units Method Reference Comment
Deltar115. ± 10.kJ/molEqGBouchard, Brenner, et al., 1997RCD

1,3,5-Trioxane = 3Formaldehyde

By formula: C3H6O3 = 3CH2O

Quantity Value Units Method Reference Comment
Deltar194.0 ± 2.5kJ/molEqkBusfield and Merigold, 1969solid phase; ALS

3Formaldehyde = 1,3,5-Trioxane

By formula: 3CH2O = C3H6O3

Quantity Value Units Method Reference Comment
Deltar-139.2 ± 2.1kJ/molEqkBusfield and Merigold, 1969gas phase; ALS

Gas phase ion energetics data

Go To: Top, Gas phase thermochemistry data, Phase change data, Reaction thermochemistry data, Ion clustering data, IR Spectrum, Mass spectrum (electron ionization), Vibrational and/or electronic energy levels, 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
MM - Michael M. Meot-Ner (Mautner)
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 CH2O+ (ion structure unspecified)

Quantity Value Units Method Reference Comment
IE (evaluated)10.88 ± 0.01eVN/AN/AL
Quantity Value Units Method Reference Comment
Proton affinity (review)712.9kJ/molN/AHunter and Lias, 1998HL
Quantity Value Units Method Reference Comment
Gas basicity683.3kJ/molN/AHunter and Lias, 1998HL
Quantity Value Units Method Reference Comment
Deltaf(+) ion941.8kJ/molN/AN/A 
Quantity Value Units Method Reference Comment
DeltafH(+) ion,0K946.0kJ/molN/AN/A 

Proton affinity at 298K

Proton affinity (kJ/mol) Reference Comment
711.5 ± 2.1Bouchoux and Leblanc, 2000T = 300K; MM

Gas basicity at 298K

Gas basicity (review) (kJ/mol) Reference Comment
681.5 ± 0.7Bouchoux and Leblanc, 2000T = 300K; MM

Ionization energy determinations

IE (eV) Method Reference Comment
10.88CIOhno, Okamura, et al., 1995LL
10.8887 ± 0.0030PENiu, Shirley, et al., 1993LL
10.86PITraeger, 1985LBLHLM
10.88PEKimura, Katsumata, et al., 1981LLK
10.9PEVon Niessen, Bieri, et al., 1980LLK
10.885 ± 0.005PEHernandez, Masclet, et al., 1977LLK
10.874 ± 0.002SDrury-Lessard and Moule, 1977LLK
10.868 ± 0.005PIGuyon, Chupka, et al., 1976LLK
10.88 ± 0.02PIWarneck, 1971LLK
10.87 ± 0.01PIMentall, Gentieu, et al., 1971LLK
10.88 ± 0.02PIMatthews and Warneck, 1969RDSH
10.884PEBaker, Baker, et al., 1968RDSH
10.86 ± 0.02EIKanomata, 1961RDSH
10.90 ± 0.03PIVilesov, 1960RDSH
10.87 ± 0.01PIWatanabe, 1957RDSH
10.88 ± 0.01SPrice, 1935RDSH
10.1PERao, 1975Vertical value; LLK

Appearance energy determinations

Ion AE (eV) Other Products MethodReferenceComment
CHO+11.97HPITraeger, 1985LBLHLM
CHO+13.94 ± 0.40HEIWankenne, Caprace, et al., 1984LBLHLM
CHO+11.92 ± 0.01HPIGuyon, Chupka, et al., 1976LLK
CHO+11.89 ± 0.03HPIWarneck, 1971LLK
CHO+11.95 ± 0.06HPIMatthews and Warneck, 1969RDSH
CO+14.10 ± 0.08H2PIGuyon, Chupka, et al., 1976LLK
CO+18.7 ± 0.2?EIBrand and Reed, 1957RDSH
H+17.41 ± 0.07CHOPIWarneck, 1971LLK
H2+15.42 ± 0.06COPIWarneck, 1971LLK

De-protonation reactions

CHO- + Hydrogen cation = Formaldehyde

By formula: CHO- + H+ = CH2O

Quantity Value Units Method Reference Comment
Deltar1650.7 ± 0.96kJ/molD-EAMurray, Miller, et al., 1986gas phase; B
Quantity Value Units Method Reference Comment
Deltar1617.7 ± 1.7kJ/molH-TSMurray, Miller, et al., 1986gas phase; B
Deltar1648. ± 19.kJ/molIMRBKarpas and Klein, 1975gas phase; B

Ion clustering data

Go To: Top, Gas phase thermochemistry data, Phase change data, Reaction thermochemistry data, Gas phase ion energetics data, IR Spectrum, Mass spectrum (electron ionization), Vibrational and/or electronic energy levels, 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:
RCD - Robert C. Dunbar
M - Michael M. Meot-Ner (Mautner) and Sharon G. Lias
B - John E. Bartmess

Note: Please consider using the reaction search for this species. This page allows searching of all reactions involving this species. Searches may be limited to ion clustering reactions. A general reaction search form is also available.

Clustering reactions

Aluminum ion (1+) + Formaldehyde = (Aluminum ion (1+) bullet Formaldehyde)

By formula: Al+ + CH2O = (Al+ bullet CH2O)

Quantity Value Units Method Reference Comment
Deltar115. ± 10.kJ/molEqGBouchard, Brenner, et al., 1997RCD

CH2N+ + Formaldehyde = (CH2N+ bullet Formaldehyde)

By formula: CH2N+ + CH2O = (CH2N+ bullet CH2O)

Bond type: Hydrogen bonds of the type NH+-O between organics

Quantity Value Units Method Reference Comment
Deltar91.2kJ/molFATanaka, Mackay, et al., 1978gas phase; switching reaction(HCNH+)HCN; Meot-Ner (Mautner), 1978; M

CH2OH+ + Formaldehyde = (CH2OH+ bullet Formaldehyde)

By formula: CH3O+ + CH2O = (CH3O+ bullet CH2O)

Bond type: Hydrogen bonds of the type OH-O between organics

Quantity Value Units Method Reference Comment
Deltar116.kJ/molICRLarson and McMahon, 1982gas phase; switching reaction(H3O+)H2O, Entropy change calculated or estimated; Cunningham, Payzant, et al., 1972, Lias, Liebman, et al., 1984, Keesee and Castleman, 1986; M
Deltar123.kJ/molFAFehsenfeld, Dotan, et al., 1978gas phase; From thermochemical cycle,switching reaction(H3O+)H2O; Lias, Liebman, et al., 1984, Meot-Ner (Mautner), 1992; M
Deltar116.kJ/molICRLarson, Clair, et al., 1982gas phase; From thermochemical cycle,switching reaction(H2O/H2CO), Entropy change calculated or estimated; Cunningham, Payzant, et al., 1972, Lias, Liebman, et al., 1984; M
Quantity Value Units Method Reference Comment
Deltar111.J/mol*KN/ALarson and McMahon, 1982gas phase; switching reaction(H3O+)H2O, Entropy change calculated or estimated; Cunningham, Payzant, et al., 1972, Lias, Liebman, et al., 1984, Keesee and Castleman, 1986; M
Deltar115.J/mol*KFAFehsenfeld, Dotan, et al., 1978gas phase; From thermochemical cycle,switching reaction(H3O+)H2O; Lias, Liebman, et al., 1984, Meot-Ner (Mautner), 1992; M
Deltar111.J/mol*KN/ALarson, Clair, et al., 1982gas phase; From thermochemical cycle,switching reaction(H2O/H2CO), Entropy change calculated or estimated; Cunningham, Payzant, et al., 1972, Lias, Liebman, et al., 1984; M
Quantity Value Units Method Reference Comment
Deltar82.8kJ/molICRLarson and McMahon, 1982gas phase; switching reaction(H3O+)H2O, Entropy change calculated or estimated; Cunningham, Payzant, et al., 1972, Lias, Liebman, et al., 1984, Keesee and Castleman, 1986; M
Deltar82.8kJ/molICRLarson, Clair, et al., 1982gas phase; From thermochemical cycle,switching reaction(H2O/H2CO), Entropy change calculated or estimated; Cunningham, Payzant, et al., 1972, Lias, Liebman, et al., 1984; M

(CH3O- bullet 4294967295Formaldehyde) + Formaldehyde = CH3O-

By formula: (CH3O- bullet 4294967295CH2O) + CH2O = CH3O-

Quantity Value Units Method Reference Comment
Deltar166.9 ± 2.1kJ/molN/ANee, Osterwalder, et al., 2006gas phase; B
Deltar171. ± 4.6kJ/molTherOsborn, Leahy, et al., 1998gas phase; B
Deltar175. ± 9.2kJ/molTherBartmess, Scott, et al., 1979gas 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

Iron ion (1+) + Formaldehyde = (Iron ion (1+) bullet Formaldehyde)

By formula: Fe+ + CH2O = (Fe+ bullet CH2O)

Quantity Value Units Method Reference Comment
Deltar138. ± 7.1kJ/molCIDTRodgers and Armentrout, 2000RCD

(Iron ion (1+) bullet Formaldehyde) + Formaldehyde = (Iron ion (1+) bullet 2Formaldehyde)

By formula: (Fe+ bullet CH2O) + CH2O = (Fe+ bullet 2CH2O)

Quantity Value Units Method Reference Comment
Deltar164. ± 4.2kJ/molCIDTRodgers and Armentrout, 2000RCD

(Iron ion (1+) bullet 2Formaldehyde) + Formaldehyde = (Iron ion (1+) bullet 3Formaldehyde)

By formula: (Fe+ bullet 2CH2O) + CH2O = (Fe+ bullet 3CH2O)

Quantity Value Units Method Reference Comment
Deltar76.1 ± 4.2kJ/molCIDTRodgers and Armentrout, 2000RCD

(Iron ion (1+) bullet 3Formaldehyde) + Formaldehyde = (Iron ion (1+) bullet 4Formaldehyde)

By formula: (Fe+ bullet 3CH2O) + CH2O = (Fe+ bullet 4CH2O)

Quantity Value Units Method Reference Comment
Deltar50.2 ± 7.1kJ/molCIDTRodgers and Armentrout, 2000RCD

Lithium ion (1+) + Formaldehyde = (Lithium ion (1+) bullet Formaldehyde)

By formula: Li+ + CH2O = (Li+ bullet CH2O)

Quantity Value Units Method Reference Comment
Deltar151.kJ/molICRWoodin and Beauchamp, 1978gas phase; switching reaction(Li+)H2O, Entropy change calculated or estimated; Dzidic and Kebarle, 1970 interpolated; M
Deltar150.kJ/molICRStaley and Beauchamp, 1975gas phase; switching reaction(Li+)H2O, from graph; Dzidic and Kebarle, 1970 extrapolated; M
Quantity Value Units Method Reference Comment
Deltar110.J/mol*KN/AWoodin and Beauchamp, 1978gas phase; switching reaction(Li+)H2O, Entropy change calculated or estimated; Dzidic and Kebarle, 1970 interpolated; M
Quantity Value Units Method Reference Comment
Deltar118.kJ/molICRWoodin and Beauchamp, 1978gas phase; switching reaction(Li+)H2O, Entropy change calculated or estimated; Dzidic and Kebarle, 1970 interpolated; M

IR Spectrum

Go To: Top, Gas phase thermochemistry data, Phase change data, Reaction thermochemistry data, Gas phase ion energetics data, Ion clustering data, Mass spectrum (electron ionization), Vibrational and/or electronic energy levels, References, Notes

Data compiled by: Coblentz Society, Inc.


Mass spectrum (electron ionization)

Go To: Top, Gas phase thermochemistry data, Phase change data, Reaction thermochemistry data, Gas phase ion energetics data, Ion clustering data, IR Spectrum, Vibrational and/or electronic energy levels, References, Notes

Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.

Data compiled by: NIST Mass Spectrometry Data Center, William E. Wallace, director

Spectrum

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Mass spectrum
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Owner NIST Mass Spectrometry Data Center
Collection (C) 2014 copyright by the U.S. Secretary of Commerce
on behalf of the United States of America. All rights reserved.
Origin H.M.B.BALLSCHMIETER NAT. FOOD RES. INST., PRETORIA, S AFRIC
NIST MS number 37883

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Vibrational and/or electronic energy levels

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Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.

Data compiled by: Takehiko Shimanouchi

Symmetry:   C2nu     Symmetry Number sigma = 2


 Sym.   No   Approximate   Selected Freq.  Infrared   Raman   Comments 
 Species   type of mode   Value   Rating   Value  Phase  Value  Phase

a1 1 CH2 s-str 2783  A 2782.5 S gas 2781.6 S liq.
a1 2 CO str 1746  A 1746.1 VS gas 1742.3 W liq.
a1 3 CH2 scis 1500  A 1500.1 S gas 1499.7 M liq.
b1 4 CH2 a-str 2843  A 2843.1 VS gas 2866 W liq.
b1 5 CH2 rock 1249  A 1249.1 S gas
b2 6 CH2 wag 1167  A 1167.3 S gas

Source: Shimanouchi, 1972

Notes

VSVery strong
SStrong
MMedium
WWeak
A0~1 cm-1 uncertainty

References

Go To: Top, Gas phase thermochemistry data, Phase change data, Reaction thermochemistry data, Gas phase ion energetics data, Ion clustering data, IR Spectrum, Mass spectrum (electron ionization), Vibrational and/or electronic energy levels, 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, Phase change data, Reaction thermochemistry data, Gas phase ion energetics data, Ion clustering data, IR Spectrum, Mass spectrum (electron ionization), Vibrational and/or electronic energy levels, References