2-Methylpiperidine
- Formula: C6H13N
- Molecular weight: 99.1741
- IUPAC Standard InChIKey: NNWUEBIEOFQMSS-UHFFFAOYSA-N
- CAS Registry Number: 109-05-7
- 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. - Stereoisomers:
- Other names: 2-Pipecoline; α-Methylpiperidine; α-Pipecoline; Pipicoline; Piperidine, 2-methyl-; α-Pipecolin; Pipecoline, α
- Permanent link for this species. Use this link for bookmarking this species for future reference.
- Information on this page:
- Other data available:
- Options:
Data at NIST subscription sites:
NIST subscription sites provide data under the NIST Standard Reference Data Program, but require an annual fee to access. The purpose of the fee is to recover costs associated with the development of data collections included in such sites. Your institution may already be a subscriber. Follow the links above to find out more about the data in these sites and their terms of usage.
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:
TRC - Thermodynamics Research Center, NIST Boulder Laboratories, Chris Muzny director
BS - Robert L. Brown and Stephen E. Stein
DH - Eugene S. Domalski and Elizabeth D. Hearing
ALS - Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
DRB - Donald R. Burgess, Jr.
AC - William E. Acree, Jr., James S. Chickos
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
Tboil | 391.15 | K | N/A | Bruhl, 1895 | Uncertainty assigned by TRC = 1.5 K; TRC |
Quantity | Value | Units | Method | Reference | Comment |
Tfus | 269.357 | K | N/A | Steele, Chirico, et al., 1986 | DH |
Quantity | Value | Units | Method | Reference | Comment |
Ttriple | 269.310 | K | N/A | Messerly, Todd, et al., 1988 | Uncertainty assigned by TRC = 0.03 K; TRC |
Ttriple | 269.350 | K | N/A | Messerly, Todd, et al., 1988 | Uncertainty assigned by TRC = 0.002 K; TRC |
Ttriple | 269.35 | K | N/A | Anonymous, 1961 | Uncertainty assigned by TRC = 0.1 K; TRC |
Quantity | Value | Units | Method | Reference | Comment |
ΔvapH° | 40.5 ± 0.2 | kJ/mol | V | Good, 1972 | ALS |
ΔvapH° | 40.4 | kJ/mol | N/A | Good, 1972 | DRB |
Reduced pressure boiling point
Tboil (K) | Pressure (bar) | Reference | Comment |
---|---|---|---|
391.7 | 1.00 | Aldrich Chemical Company Inc., 1990 | BS |
Enthalpy of vaporization
ΔvapH (kJ/mol) | Temperature (K) | Method | Reference | Comment |
---|---|---|---|---|
38.2 | 338. | EB,IP | Stephenson and Malanowski, 1987 | Based on data from 323. to 431. K. See also Osborn and Douslin, 1968.; AC |
Antoine Equation Parameters
log10(P) = A − (B / (T + C))
P = vapor pressure (bar)
T = temperature (K)
View plot Requires a JavaScript / HTML 5 canvas capable browser.
Temperature (K) | A | B | C | Reference |
---|---|---|---|---|
324.63 to 430.68 | 3.94136 | 1273.28 | -67.908 | Osborn and Douslin, 1968 |
Enthalpy of fusion
ΔfusH (kJ/mol) | Temperature (K) | Reference | Comment |
---|---|---|---|
18.58387 | 269.357 | Messerly, Todd, et al., 1988, 2 | DH |
18.5836 | 269.357 | Messerly, Todd, et al., 1987 | DH |
18.58 | 269.4 | Domalski and Hearing, 1996 | AC |
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 evaluated as indicated in comments:
L - Sharon G. Lias
Data compiled as indicated in comments:
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
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
IE (evaluated) | 7.9 ± 0.1 | eV | N/A | N/A | L |
Ionization energy determinations
IE (eV) | Method | Reference | Comment |
---|---|---|---|
8.04 ± 0.05 | PE | Rozeboom and Houk, 1982 | LBLHLM |
7.76 ± 0.05 | PE | Pesterev, Gabdrakipov, et al., 1979 | LLK |
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.
Bruhl, 1895
Bruhl, J.W.,
Spectrochemistry of Nitrogen-Containing Compounds. I.,
Z. Phys. Chem., Stoechiom. Verwandtschaftsl., 1895, 16, 193. [all data]
Steele, Chirico, et al., 1986
Steele, W.V.; Chirico, R.D.; Collier, W.B.; Hossenlopp, I.A.; Nguyen, A.; Strube, M.M.,
Thermochemical and thermophysical properties of organic nitrogen compounds found in fossil materials,
NIPER Report, 1986, 188, 112p. [all data]
Messerly, Todd, et al., 1988
Messerly, J.F.; Todd, s.S.; Finke, H.L.; Good, W.D.; Gammon, B.E.,
Condensed-phase heat-capacity studies and derived thermodynamic properties for six cyclic nitrogen compounds,
J. Chem. Thermodyn., 1988, 20, 209. [all data]
Anonymous, 1961
Anonymous, R.,
Preliminary thermodyn. prop. of FREON-14, E. I. Du Pont, Freon Tech. Bull. T-14, 1961. [all data]
Good, 1972
Good, W.D.,
Enthalpies of combustion of nine organic nitrogen compounds related to petroleum,
J. Chem. Eng. Data, 1972, 17, 28-31. [all data]
Aldrich Chemical Company Inc., 1990
Aldrich Chemical Company Inc.,
Catalog Handbook of Fine Chemicals, Aldrich Chemical Company, Inc., Milwaukee WI, 1990, 1. [all data]
Stephenson and Malanowski, 1987
Stephenson, Richard M.; Malanowski, Stanislaw,
Handbook of the Thermodynamics of Organic Compounds, 1987, https://doi.org/10.1007/978-94-009-3173-2
. [all data]
Osborn and Douslin, 1968
Osborn, Ann G.; Douslin, Donald R.,
Vapor pressure relations of 13 nitrogen compounds related to petroleum,
J. Chem. Eng. Data, 1968, 13, 4, 534-537, https://doi.org/10.1021/je60039a024
. [all data]
Messerly, Todd, et al., 1988, 2
Messerly, J.F.; Todd, S.S.; Finke, H.L.; Good, W.D.; Gammon, B.E.,
Condensed-phase heat-capacity studies and derived thermodynamic properties for six cyclic nitrogen compounds,
J. Chem. Thermodynam., 1988, 20, 209-224. [all data]
Messerly, Todd, et al., 1987
Messerly, J.F.; Todd, S.S.; Finke, H.L.; Gammon, B.E.,
Thermodynamic properties of organic nitrogen compounds that occur in shale oil and heavy petroleum-topical report,
NIPER Report, 1987, 83, 37p. [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]
Rozeboom and Houk, 1982
Rozeboom, M.D.; Houk, K.N.,
Stereospecific alkyl group effects on amine lone-pair ionization potentials: Photoelectron spectra of alkylpiperidines,
J. Am. Chem. Soc., 1982, 104, 1189. [all data]
Pesterev, Gabdrakipov, et al., 1979
Pesterev, V.I.; Gabdrakipov, V.Z.; Artyukhin, V.I.; Agashkin, O.V.,
The ionisation and excitation of the conformers of piperidine and its alkyl derivatives,
Russ. J. Phys. Chem., 1979, 53, 845. [all data]
Notes
Go To: Top, Phase change data, Gas phase ion energetics data, References
- Symbols used in this document:
IE (evaluated) Recommended ionization energy Tboil Boiling point Tfus Fusion (melting) point Ttriple Triple point temperature ΔfusH Enthalpy of fusion ΔvapH Enthalpy of vaporization ΔvapH° Enthalpy of vaporization at standard conditions - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
- The National Institute of Standards and Technology (NIST) uses its best efforts to deliver a high quality copy of the Database and to verify that the data contained therein have been selected on the basis of sound scientific judgment. However, NIST makes no warranties to that effect, and NIST shall not be liable for any damage that may result from errors or omissions in the Database.
- Customer support for NIST Standard Reference Data products.