Cyclopentanol
- Formula: C5H10O
- Molecular weight: 86.1323
- IUPAC Standard InChIKey: XCIXKGXIYUWCLL-UHFFFAOYSA-N
- CAS Registry Number: 96-41-3
- Chemical structure:
This structure is also available as a 2d Mol file or as a computed 3d SD file
View 3d structure (requires JavaScript / HTML 5) - Other names: Cyclopentyl alcohol; Hydroxycyclopentane; UN 2244
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Phase change data
Go To: Top, 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:
BS - Robert L. Brown and Stephen E. Stein
TRC - Thermodynamics Research Center, NIST Boulder Laboratories, Chris Muzny director
AC - William E. Acree, Jr., James S. Chickos
ALS - Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
DRB - Donald R. Burgess, Jr.
CAL - James S. Chickos, William E. Acree, Jr., Joel F. Liebman, Students of Chem 202 (Introduction to the Literature of Chemistry), University of Missouri -- St. Louis
DH - Eugene S. Domalski and Elizabeth D. Hearing
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
Tboil | 413. ± 2. | K | AVG | N/A | Average of 10 values; Individual data points |
Quantity | Value | Units | Method | Reference | Comment |
Tfus | 254.15 | K | N/A | Timmermans, 1952 | Uncertainty assigned by TRC = 1. K; TRC |
Tfus | 253. | K | N/A | White and Bishop, 1940 | Crystal phase 1 phase; Uncertainty assigned by TRC = 2. K; TRC |
Quantity | Value | Units | Method | Reference | Comment |
Ttriple | 255.6 | K | N/A | Kabo, Diky, et al., 1995 | Crystal phase 1 phase; Uncertainty assigned by TRC = 0.3 K; TRC |
Ttriple | 256.0 | K | N/A | Wuerflinger and Kreutzenbeck, 1978 | Crystal phase 1 phase; Uncertainty assigned by TRC = 0.5 K; TRC |
Ttriple | 257.4 | K | N/A | Parks, Kennedy, et al., 1956 | Crystal phase 1 phase; Uncertainty assigned by TRC = 0.2 K; see 1978 wuekre 0 for phase identification; TRC |
Quantity | Value | Units | Method | Reference | Comment |
Tc | 620. ± 1. | K | N/A | Gude and Teja, 1995 | |
Tc | 619.5 | K | N/A | Ambrose and Ghiassee, 1987 | Uncertainty assigned by TRC = 1. K; TRC |
Quantity | Value | Units | Method | Reference | Comment |
Pc | 48. ± 1. | atm | N/A | Gude and Teja, 1995 | |
Pc | 48.36 | atm | N/A | Ambrose and Ghiassee, 1987 | Uncertainty assigned by TRC = 0.987 atm; TRC |
Quantity | Value | Units | Method | Reference | Comment |
ΔvapH° | 13.7 ± 0.3 | kcal/mol | AVG | N/A | Average of 8 values; Individual data points |
Enthalpy of vaporization
ΔvapH (kcal/mol) | Temperature (K) | Method | Reference | Comment |
---|---|---|---|---|
12.6 | 361. | A,EB | Ambrose and Ghiassee, 1987, 2 | Based on data from 346. to 437. K.; AC |
13.6 | 294. | N/A | Cabani, Conti, et al., 1975 | Based on data from 279. to 314. K.; AC |
Enthalpy of fusion
ΔfusH (kcal/mol) | Temperature (K) | Reference | Comment |
---|---|---|---|
0.368 | 257.4 | Domalski and Hearing, 1996 | AC |
Entropy of fusion
ΔfusS (cal/mol*K) | Temperature (K) | Reference | Comment |
---|---|---|---|
4.369 | 202.8 | Domalski and Hearing, 1996 | CAL |
1.43 | 257.4 |
Enthalpy of phase transition
ΔHtrs (kcal/mol) | Temperature (K) | Initial Phase | Final Phase | Reference | Comment |
---|---|---|---|---|---|
0.8860 | 202.8 | crystaline, II | crystaline, I | Parks, Kennedy, et al., 1956, 2 | DH |
0.3671 | 257.4 | crystaline, I | liquid | Parks, Kennedy, et al., 1956, 2 | DH |
Entropy of phase transition
ΔStrs (cal/mol*K) | Temperature (K) | Initial Phase | Final Phase | Reference | Comment |
---|---|---|---|---|---|
4.369 | 202.8 | crystaline, II | crystaline, I | Parks, Kennedy, et al., 1956, 2 | DH |
1.43 | 257.4 | crystaline, I | liquid | Parks, Kennedy, et al., 1956, 2 | DH |
Gas phase ion energetics data
Go To: Top, Phase change 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
MM - Michael M. Meot-Ner (Mautner)
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 C5H10O+ (ion structure unspecified)
Proton affinity at 298K
Proton affinity (kcal/mol) | Reference | Comment |
---|---|---|
191. ± 1. | Cao and Holmes, 2001 | MM |
Ionization energy determinations
IE (eV) | Method | Reference | Comment |
---|---|---|---|
9.72 | PI | Traeger, 1985 | LBLHLM |
9.58 ± 0.06 | EI | Holmes, Yuan, et al., 1977 | LLK |
Appearance energy determinations
Ion | AE (eV) | Other Products | Method | Reference | Comment |
---|---|---|---|---|---|
C3H5O+ | 9.72 | C2H5 | PI | Traeger, 1985 | LBLHLM |
C3H6O+ | 9.98 | C2H4 | EI | Holmes and Lossing, 1980 | LLK |
C5H8+ | 9.66 ± 0.06 | H2O | EI | Holmes, Yuan, et al., 1977 | LLK |
C5H8+ | 9.49 | H2O | EI | Lewis and Hamill, 1970 | RDSH |
H2O+ | 13.23 | C5H8 | EI | Lewis and Hamill, 1970 | RDSH |
De-protonation reactions
C5H9O- + =
By formula: C5H9O- + H+ = C5H10O
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 383.0 ± 4.6 | kcal/mol | D-EA | Alconcel and Continetti, 2002 | gas phase; derived acidity seems ca. 10 kcal/mol too weak, and EA likewise; B |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 366.9 ± 1.1 | kcal/mol | N/A | Garver, Yang, et al., 2011 | gas phase; B |
ΔrG° | 374.9 ± 4.7 | kcal/mol | H-TS | Alconcel and Continetti, 2002 | gas phase; derived acidity seems ca. 10 kcal/mol too weak, and EA likewise; B |
References
Go To: Top, Phase change 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.
Timmermans, 1952
Timmermans, J.,
Freezing points of organic compounds. VVI New determinations.,
Bull. Soc. Chim. Belg., 1952, 61, 393. [all data]
White and Bishop, 1940
White, A.H.; Bishop, W.S.,
Dielectric Evidence of Molecular Rotation in the Crystals of Certain Non-aromatic Compounds,
J. Am. Chem. Soc., 1940, 62, 8-16. [all data]
Kabo, Diky, et al., 1995
Kabo, G.Ya.; Diky, V.V.; Kozyro, A.A.; Krasulin, A.P.; Sevruk, V.M.,
Thermodynamic properties, conformational composition, and phase transitions of cyclopentanol,
J. Chem. Thermodyn., 1995, 27, 953-67. [all data]
Wuerflinger and Kreutzenbeck, 1978
Wuerflinger, A.; Kreutzenbeck, J.,
J. Phys. Chem. Solids, 1978, 39, 193. [all data]
Parks, Kennedy, et al., 1956
Parks, G.S.; Kennedy, W.D.; Gates, R.R.; Mosley, J.R.; Moore, G.E.; Renquist, M.L.,
Thermal Data on Organic Compounds XXVI. Some Heat Capacity, Entropy and Free Energy Data for Seven Compounds Containing Oxygen,
J. Am. Chem. Soc., 1956, 78, 56-9. [all data]
Gude and Teja, 1995
Gude, M.; Teja, A.S.,
Vapor-Liquid Critical Properties of Elements and Compounds. 4. Aliphatic Alkanols,
J. Chem. Eng. Data, 1995, 40, 1025-1036. [all data]
Ambrose and Ghiassee, 1987
Ambrose, D.; Ghiassee, N.B.,
Vapor Pressures and Critical Temperatures and Critical Pressures of C5 and C6 Cyclic Alcohols and Ketones,
J. Chem. Thermodyn., 1987, 19, 903. [all data]
Ambrose and Ghiassee, 1987, 2
Ambrose, D.; Ghiassee, N.B.,
Vapour pressures and critical temperatures and critical pressures of C5 and C6 cyclic alcohols and ketones,
The Journal of Chemical Thermodynamics, 1987, 19, 9, 903-909, https://doi.org/10.1016/0021-9614(87)90036-X
. [all data]
Cabani, Conti, et al., 1975
Cabani, Sergio; Conti, G.; Mollica, V.; Lepori, L.,
Thermodynamic study of dilute aqueous solutions of organic compounds. Part 4.---Cyclic and straight chain secondary alcohols,
J. Chem. Soc., Faraday Trans. 1, 1975, 71, 0, 1943, https://doi.org/10.1039/f19757101943
. [all data]
Domalski and Hearing, 1996
Domalski, Eugene S.; Hearing, Elizabeth D.,
Heat Capacities and Entropies of Organic Compounds in the Condensed Phase. Volume III,
J. Phys. Chem. Ref. Data, 1996, 25, 1, 1, https://doi.org/10.1063/1.555985
. [all data]
Parks, Kennedy, et al., 1956, 2
Parks, G.S.; Kennedy, W.D.; Gates, R.R.; Mosley, J.R.; Moore, G.E.; Renquist, M.L.,
Thermal data on organic compounds. XXVI. Some heat capacity, entropy and free energy data for seven compounds containing oxygen.,
Not In System, 1956, 78, 56-59. [all data]
Cao and Holmes, 2001
Cao, J.; Holmes, J.L.,
Determination of the proton affinities of secondary alcohols from the dissocation of proton-bound molecular trios,
European J. Mass Spectrom., 2001, 7, 243-247. [all data]
Traeger, 1985
Traeger, J.C.,
Heat of formation for the propanoyl cation by photoionization mass spectrometry,
Org. Mass Spectrom., 1985, 20, 223. [all data]
Holmes, Yuan, et al., 1977
Holmes, J.L.; Yuan, D.; Rye, R.T.B.,
Metastable ion studies VII-Loss of water from the molecular ion of cyclopentanol,
Org. Mass Spectrom., 1977, 12, 254. [all data]
Holmes and Lossing, 1980
Holmes, J.L.; Lossing, F.P.,
Gas-phase heats of formation of keto and enol ions of carbonyl compounds.,
J. Am. Chem. Soc., 1980, 102, 1591. [all data]
Lewis and Hamill, 1970
Lewis, D.; Hamill, W.H.,
Excited states of neutral molecular fragments from appearance potentials by electron impact in a mass spectrometer,
J. Chem. Phys., 1970, 52, 6348. [all data]
Alconcel and Continetti, 2002
Alconcel, L.S.; Continetti, R.E.,
Dissociation dynamics and stability of cyclopentoxy and cyclopentoxide,
Chem. Phys. Lett., 2002, 366, 5-6, 642-649, https://doi.org/10.1016/S0009-2614(02)01633-0
. [all data]
Garver, Yang, et al., 2011
Garver, J.M.; Yang, Z.B.; Kato, S.; Wren, S.W.; Vogelhuber, K.M.; Lineberger, W.C.; Bierbaum, V.M.,
Gas Phase Reactions of 1,3,5-Triazine: Proton Transfer, Hydride Transfer, and Anionic sigma-Adduct Formation,
J. Am. Soc. Mass Spectrom., 2011, 22, 7, 1260-1272, https://doi.org/10.1007/s13361-011-0133-9
. [all data]
Notes
Go To: Top, Phase change data, Gas phase ion energetics data, References
- Symbols used in this document:
AE Appearance energy Pc Critical pressure Tboil Boiling point Tc Critical temperature Tfus Fusion (melting) point Ttriple Triple point temperature ΔHtrs Enthalpy of phase transition ΔStrs Entropy of phase transition ΔfusH Enthalpy of fusion ΔfusS Entropy of fusion ΔrG° Free energy of reaction at standard conditions ΔrH° Enthalpy of reaction at standard conditions ΔvapH Enthalpy of vaporization ΔvapH° Enthalpy of vaporization at standard conditions - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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