Furan

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Gas phase thermochemistry data

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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 as indicated in comments:
DRB - Donald R. Burgess, Jr.
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
Δfgas-27.7kJ/molN/AZaheeruddin and Lodhi, 1991Value computed using ΔfHliquid° value of -55.4 kj/mol from Zaheeruddin and Lodhi, 1991 and ΔvapH° value of 27.6 kj/mol from Guthrie, Scott, et al., 1952.; DRB
Δfgas-34.7kJ/molCcbGuthrie, Scott, et al., 1952ALS
Δfgas-29.8kJ/molN/ALandrieu, Baylocq, et al., 1929Value computed using ΔfHliquid° value of -57.5 kj/mol from Landrieu, Baylocq, et al., 1929 and ΔvapH° value of 27.6 kj/mol from Guthrie, Scott, et al., 1952.; DRB

Constant pressure heat capacity of gas

Cp,gas (J/mol*K) Temperature (K) Reference Comment
33.2650.Dorofeeva O.V., 1992p=1 bar. Selected entropies and heat capacities are in good agreement with those obtained in other statistical calculations [ Guthrie G.B., 1952, Bak B., 1955, Rico M., 1967, Soptrajanov B., 1968, Chao J., 1986, Klots T.D., 1994].; GT
33.53100.
36.39150.
43.60200.
59.43273.15
65.4 ± 1.5298.15
65.85300.
88.80400.
107.82500.
122.77600.
134.59700.
144.13800.
152.00900.
158.601000.
164.201100.
168.971200.
173.081300.
176.621400.
179.691500.

Constant pressure heat capacity of gas

Cp,gas (J/mol*K) Temperature (K) Reference Comment
70.29317.25Guthrie G.B., 1952GT
80.12358.20
90.00402.20
99.58449.20
106.48487.20

Condensed phase thermochemistry data

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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 as indicated in comments:
ALS - Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
DH - Eugene S. Domalski and Elizabeth D. Hearing

Quantity Value Units Method Reference Comment
Δfliquid  CcbZaheeruddin and Lodhi, 1991uncertain value: -55.36 kJ/mol; ALS
Δfliquid-62.34kJ/molCcbGuthrie, Scott, et al., 1952ALS
Δfliquid-57.45kJ/molCcbLandrieu, Baylocq, et al., 1929ALS
Quantity Value Units Method Reference Comment
Δcliquid  CcbZaheeruddin and Lodhi, 1991uncertain value: -2090.36 kJ/mol; ALS
Δcliquid-2083.5kJ/molCcbGuthrie, Scott, et al., 1952Corresponding Δfliquid = -62.17 kJ/mol (simple calculation by NIST; no Washburn corrections); ALS
Δcliquid-2088.kJ/molCcbLandrieu, Baylocq, et al., 1929Corresponding Δfliquid = -57.3 kJ/mol (simple calculation by NIST; no Washburn corrections); ALS
Quantity Value Units Method Reference Comment
liquid176.65J/mol*KN/AGuthrie, Scott, et al., 1952, 2DH

Constant pressure heat capacity of liquid

Cp,liquid (J/mol*K) Temperature (K) Reference Comment
114.56298.15Guthrie, Scott, et al., 1952, 2T = 11 to 300 K.; DH

Phase change data

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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 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
DRB - Donald R. Burgess, Jr.
DH - Eugene S. Domalski and Elizabeth D. Hearing
ALS - Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
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

Quantity Value Units Method Reference Comment
Tboil304.7 ± 0.6KAVGN/AAverage of 12 out of 13 values; Individual data points
Quantity Value Units Method Reference Comment
Tfus187.44KN/AGuanquan, Ott, et al., 1986Uncertainty assigned by TRC = 0.2 K; TRC
Tfus187.56KN/AGoates, Ott, et al., 1973Uncertainty assigned by TRC = 0.05 K; TRC
Tfus187.15KN/ABrooks and Pilcher, 1959Uncertainty assigned by TRC = 1. K; TRC
Tfus187.47KN/ABoord, Greenlee, et al., 1946Uncertainty assigned by TRC = 0.2 K; TRC
Tfus187.55KN/ADolliver, Gresham, et al., 1938Uncertainty assigned by TRC = 0.3 K; TRC
Quantity Value Units Method Reference Comment
Ttriple187.54KN/AWilhoit, Chao, et al., 1985Crystal phase 1 phase; Uncertainty assigned by TRC = 0.05 K; TRC
Ttriple187.55KN/AGuthrie, Scott, et al., 1952, 3Crystal phase 1 phase; Uncertainty assigned by TRC = 0.02 K; TRC
Quantity Value Units Method Reference Comment
Tc490.2KN/AMajer and Svoboda, 1985 
Tc490.2KN/ACheng, McCoubrey, et al., 1962Uncertainty assigned by TRC = 0.3 K; Visual (5-cm 2-mm bore tubes) in nitrate-nitrite bath, TE or TH cal. vs NPL thermometer.; TRC
Tc487.KN/AKobe, Ravicz, et al., 1956Uncertainty assigned by TRC = 2. K; TRC
Quantity Value Units Method Reference Comment
Pc53.20barN/AKobe, Ravicz, et al., 1956Uncertainty assigned by TRC = 1.172 bar; TRC
Quantity Value Units Method Reference Comment
Vc0.219l/molN/AKobe, Ravicz, et al., 1956Uncertainty assigned by TRC = 0.005 l/mol; TRC
Quantity Value Units Method Reference Comment
Δvap27.71kJ/molN/AMajer and Svoboda, 1985 
Δvap28.2kJ/molN/AMoiseev and Antonova, 1970Based on data from 277. to 323. K.; AC
Δvap27.6kJ/molN/AGuthrie, Scott, et al., 1952DRB

Reduced pressure boiling point

Tboil (K) Pressure (bar) Reference Comment
305.21.01Aldrich Chemical Company Inc., 1990BS

Enthalpy of vaporization

ΔvapH (kJ/mol) Temperature (K) Method Reference Comment
27.1304.5N/AMajer and Svoboda, 1985 
27.451298.15N/AGuthrie, Scott, et al., 1952, 2P = 79.934 kPa; DH
30.2253.AStephenson and Malanowski, 1987Based on data from 238. to 356. K.; AC
27.7304.36EGuthrie, Scott, et al., 1952ALS
28.6290.N/AGuthrie, Scott, et al., 1952, 2Based on data from 275. to 334. K. See also Boublik, Fried, et al., 1984.; AC
27.2304.2VMathews and Fehlandt, 1931ALS

Enthalpy of vaporization

ΔvapH = A exp(-βTr) (1 − Tr)β
    ΔvapH = Enthalpy of vaporization (at saturation pressure) (kJ/mol)
    Tr = reduced temperature (T / Tc)

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Temperature (K) A (kJ/mol) β Tc (K) Reference Comment
279. to 305.42.320.2802490.2Majer and Svoboda, 1985 

Entropy of vaporization

ΔvapS (J/mol*K) Temperature (K) Reference Comment
92.07298.15Guthrie, Scott, et al., 1952, 2P; DH

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
275.70 to 334.584.100031060.801-45.416Guthrie, Scott, et al., 1952, 2Coefficents calculated by NIST from author's data.

Enthalpy of fusion

ΔfusH (kJ/mol) Temperature (K) Reference Comment
3.8187.6Domalski and Hearing, 1996AC

Entropy of fusion

ΔfusS (J/mol*K) Temperature (K) Reference Comment
13.64150.0Domalski and Hearing, 1996CAL
20.29187.6

Enthalpy of phase transition

ΔHtrs (kJ/mol) Temperature (K) Initial Phase Final Phase Reference Comment
2.0468150.0crystaline, IIcrystaline, IGuthrie, Scott, et al., 1952, 2DH
3.8024187.55crystaline, IliquidGuthrie, Scott, et al., 1952, 2DH

Entropy of phase transition

ΔStrs (J/mol*K) Temperature (K) Initial Phase Final Phase Reference Comment
13.65150.0crystaline, IIcrystaline, IGuthrie, Scott, et al., 1952, 2DH
20.27187.55crystaline, IliquidGuthrie, Scott, et al., 1952, 2DH

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, Condensed phase thermochemistry data, Phase change data, Gas phase ion energetics data, Ion clustering data, IR Spectrum, Mass spectrum (electron ionization), UV/Visible 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 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

C4H5O+ + Furan = (C4H5O+ • Furan)

By formula: C4H5O+ + C4H4O = (C4H5O+ • C4H4O)

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

Quantity Value Units Method Reference Comment
Δr42.kJ/molPHPMSHiraoka, Takimoto, et al., 1987gas phase; ΔrH<; M
Δr79.kJ/molPHPMSMeot-Ner (Mautner), Ross, et al., 1985gas phase; Entropy change calculated or estimated, ΔrH<; M
Quantity Value Units Method Reference Comment
Δr130.J/mol*KN/AMeot-Ner (Mautner), Ross, et al., 1985gas phase; Entropy change calculated or estimated, ΔrH<; M

Free energy of reaction

ΔrG° (kJ/mol) T (K) Method Reference Comment
28.382.PHPMSMeot-Ner (Mautner), Ross, et al., 1985gas phase; Entropy change calculated or estimated, ΔrH<; M

C4H3O- + Hydrogen cation = Furan

By formula: C4H3O- + H+ = C4H4O

Quantity Value Units Method Reference Comment
Δr1636.2 ± 1.5kJ/molG+TSGrabowski and Owusugas phase; B
Δr1624. ± 13.kJ/molG+TSDePuy, Kass, et al., 1988gas phase; Order:H2O < furan < 2-Me-furan < MeOH. D exchange indicates anion at C-2.; B
Quantity Value Units Method Reference Comment
Δr1602.1 ± 0.84kJ/molIMREGrabowski and Owusugas phase; B
Δr1590. ± 13.kJ/molIMRBDePuy, Kass, et al., 1988gas phase; Order:H2O < furan < 2-Me-furan < MeOH. D exchange indicates anion at C-2.; B

Furan + 2Hydrogen = Tetrahydrofuran

By formula: C4H4O + 2H2 = C4H8O

Quantity Value Units Method Reference Comment
Δr-151.1 ± 0.50kJ/molChydDolliver, Gresham, et al., 1938, 2gas phase; Reanalyzed by Cox and Pilcher, 1970, Original value = -153.3 ± 0.50 kJ/mol; At 355 °K; ALS

C4H4O+ + Furan = (C4H4O+ • Furan)

By formula: C4H4O+ + C4H4O = (C4H4O+ • C4H4O)

Quantity Value Units Method Reference Comment
Δr72.0kJ/molPHPMSHiraoka, Takimoto, et al., 1987gas phase; M
Quantity Value Units Method Reference Comment
Δr99.2J/mol*KPHPMSHiraoka, Takimoto, et al., 1987gas phase; M

(C4H4O+ • Furan) + Furan = (C4H4O+ • 2Furan)

By formula: (C4H4O+ • C4H4O) + C4H4O = (C4H4O+ • 2C4H4O)

Quantity Value Units Method Reference Comment
Δr30.kJ/molPHPMSHiraoka, Takimoto, et al., 1987gas phase; ΔrH<; M

Sodium ion (1+) + Furan = (Sodium ion (1+) • Furan)

By formula: Na+ + C4H4O = (Na+ • C4H4O)

Free energy of reaction

ΔrG° (kJ/mol) T (K) Method Reference Comment
49.0298.IMREMcMahon and Ohanessian, 2000Anchor alanine=39.89; RCD

Gas phase ion energetics data

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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 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 C4H4O+ (ion structure unspecified)

Quantity Value Units Method Reference Comment
IE (evaluated)8.88 ± 0.01eVN/AN/AL
Quantity Value Units Method Reference Comment
Proton affinity (review)803.4kJ/molN/AHunter and Lias, 1998HL
Quantity Value Units Method Reference Comment
Gas basicity770.9kJ/molN/AHunter and Lias, 1998HL

Proton affinity at 298K

Proton affinity (kJ/mol) Reference Comment
812. ± 8.van Beelen, Koblenz, et al., 2004T = 298K; PA derived by authors from GB with protonation entropy equated to Rlnσ(B)/σ(BH+); MM
813. ± 8.van Beelen, Koblenz, et al., 2004T = 298K; PA derived by authors from GB with protonation entropy equated to Rlnσ(B)/σ(BH+); MM

Gas basicity at 298K

Gas basicity (review) (kJ/mol) Reference Comment
781. ± 8.van Beelen, Koblenz, et al., 2004T = 298K; PA derived by authors from GB with protonation entropy equated to Rlnσ(B)/σ(BH+); MM
782. ± 8.van Beelen, Koblenz, et al., 2004T = 298K; PA derived by authors from GB with protonation entropy equated to Rlnσ(B)/σ(BH+); MM

Ionization energy determinations

IE (eV) Method Reference Comment
8.9PEKlapstein, MacPherson, et al., 1990LL
8.88PEVeszpremi, Nyulaszi, et al., 1987LBLHLM
8.98 ± 0.03EIArimura and Yoshikawa, 1984LBLHLM
8.83PEKlasinc, Sabljic, et al., 1982LBLHLM
8.87PEKimura, Katsumata, et al., 1981LLK
8.83PEGalasso, Klasinc, et al., 1981LLK
8.88PEWillett and Baer, 1980LLK
9.0 ± 0.1CEMSTedder and Vidaud, 1980LLK
8.88 ± 0.05EIHolmes and Terlouw, 1979LLK
~8.8EIVan Veen, 1976LLK
8.89CTSAloisi, Santini, et al., 1975LLK
8.85 ± 0.05EIThorstad and Undheim, 1974LLK
8.99 ± 0.05EILinda, Marino, et al., 1971LLK
8.883PEDerrick, Asbrink, et al., 1971LLK
8.883SDerrick, Asbrink, et al., 1971LLK
8.91 ± 0.01PIPotapov and Bazhenov, 1970RDSH
8.87 ± 0.03EIJohnstone, Mellon, et al., 1970RDSH
8.89 ± 0.05PEBaker, Betteridge, et al., 1970RDSH
8.89 ± 0.01PIWatanabe, 1957RDSH
8.90PEZykov, Erchak, et al., 1983Vertical value; LBLHLM
8.88PEBock and Roth, 1983Vertical value; LBLHLM
8.89PEKobayashi, Kubota, et al., 1982Vertical value; LBLHLM
8.89PEBieri, Asbrink, et al., 1982Vertical value; LBLHLM
8.88PESchweig and Thiel, 1974Vertical value; LLK

Appearance energy determinations

Ion AE (eV) Other Products MethodReferenceComment
CHO+13.2 ± 0.1C3H3PEWillett and Baer, 1980LLK
CHO+13.7 ± 0.1C3H3CEMSTedder and Vidaud, 1980LLK
C2HO+12.5 ± 0.2C2H3CEMSTedder and Vidaud, 1980LLK
C2H2O+11.80 ± 0.10C2H2PEWillett and Baer, 1980LLK
C3H3+12.10 ± 0.10CHOPEWillett and Baer, 1980LLK
C3H3+12.8 ± 0.1CHOCEMSTedder and Vidaud, 1980LLK
C3H4+11.48 ± 0.05COEIMommers, Burgers, et al., 1984LBLHLM
C3H4+11.60 ± 0.10COPEWillett and Baer, 1980LLK
C3H4+12.7 ± 0.1COCEMSTedder and Vidaud, 1980LLK

De-protonation reactions

C4H3O- + Hydrogen cation = Furan

By formula: C4H3O- + H+ = C4H4O

Quantity Value Units Method Reference Comment
Δr1636.2 ± 1.5kJ/molG+TSGrabowski and Owusugas phase; B
Δr1624. ± 13.kJ/molG+TSDePuy, Kass, et al., 1988gas phase; Order:H2O < furan < 2-Me-furan < MeOH. D exchange indicates anion at C-2.; B
Quantity Value Units Method Reference Comment
Δr1602.1 ± 0.84kJ/molIMREGrabowski and Owusugas phase; B
Δr1590. ± 13.kJ/molIMRBDePuy, Kass, et al., 1988gas phase; Order:H2O < furan < 2-Me-furan < MeOH. D exchange indicates anion at C-2.; B

Ion clustering data

Go To: Top, Gas phase thermochemistry data, Condensed phase thermochemistry data, Phase change data, Reaction thermochemistry data, Gas phase ion energetics data, IR Spectrum, Mass spectrum (electron ionization), UV/Visible 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 as indicated in comments:
M - Michael M. Meot-Ner (Mautner) and Sharon G. Lias
RCD - Robert C. Dunbar

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

C4H4O+ + Furan = (C4H4O+ • Furan)

By formula: C4H4O+ + C4H4O = (C4H4O+ • C4H4O)

Quantity Value Units Method Reference Comment
Δr72.0kJ/molPHPMSHiraoka, Takimoto, et al., 1987gas phase; M
Quantity Value Units Method Reference Comment
Δr99.2J/mol*KPHPMSHiraoka, Takimoto, et al., 1987gas phase; M

(C4H4O+ • Furan) + Furan = (C4H4O+ • 2Furan)

By formula: (C4H4O+ • C4H4O) + C4H4O = (C4H4O+ • 2C4H4O)

Quantity Value Units Method Reference Comment
Δr30.kJ/molPHPMSHiraoka, Takimoto, et al., 1987gas phase; ΔrH<; M

C4H5O+ + Furan = (C4H5O+ • Furan)

By formula: C4H5O+ + C4H4O = (C4H5O+ • C4H4O)

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

Quantity Value Units Method Reference Comment
Δr42.kJ/molPHPMSHiraoka, Takimoto, et al., 1987gas phase; ΔrH<; M
Δr79.kJ/molPHPMSMeot-Ner (Mautner), Ross, et al., 1985gas phase; Entropy change calculated or estimated, ΔrH<; M
Quantity Value Units Method Reference Comment
Δr130.J/mol*KN/AMeot-Ner (Mautner), Ross, et al., 1985gas phase; Entropy change calculated or estimated, ΔrH<; M

Free energy of reaction

ΔrG° (kJ/mol) T (K) Method Reference Comment
28.382.PHPMSMeot-Ner (Mautner), Ross, et al., 1985gas phase; Entropy change calculated or estimated, ΔrH<; M

Sodium ion (1+) + Furan = (Sodium ion (1+) • Furan)

By formula: Na+ + C4H4O = (Na+ • C4H4O)

Free energy of reaction

ΔrG° (kJ/mol) T (K) Method Reference Comment
49.0298.IMREMcMahon and Ohanessian, 2000Anchor alanine=39.89; RCD

IR Spectrum

Go To: Top, Gas phase thermochemistry data, Condensed phase thermochemistry data, Phase change data, Reaction thermochemistry data, Gas phase ion energetics data, Ion clustering data, Mass spectrum (electron ionization), UV/Visible 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: Coblentz Society, Inc.

Gas Phase Spectrum

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IR spectrum
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Notice: Except where noted, spectra from this collection were measured on dispersive instruments, often in carefully selected solvents, and hence may differ in detail from measurements on FTIR instruments or in other chemical environments. More information on the manner in which spectra in this collection were collected can be found here.

Notice: Concentration information is not available for this spectrum and, therefore, molar absorptivity values cannot be derived.

Additional Data

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Owner Copyright (C) 1987 by the Coblentz Society
Collection (C) 2018 copyright by the U.S. Secretary of Commerce
on behalf of the United States of America. All rights reserved.
Origin DOW CHEMICAL COMPANY
Source reference COBLENTZ NO. 8800
Date 1964
State GAS (100 mmHg, N2 ADDED, TOTAL PRESSURE 600 mmHg)
Instrument DOW KBr FOREPRISM-GRATING
Instrument parameters GRATING CHANGED AT 5.0, 7.5, 15.0 MICRON
Path length 5 CM
Resolution 2
Sampling procedure TRANSMISSION
Data processing DIGITIZED BY COBLENTZ SOCIETY (BATCH II) FROM HARD COPY

This IR spectrum is from the Coblentz Society's evaluated infrared reference spectra collection.


Mass spectrum (electron ionization)

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

Spectrum

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Mass spectrum
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Additional Data

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Due to licensing restrictions, this spectrum cannot be downloaded.

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 Japan AIST/NIMC Database- Spectrum MS-NW- 16
NIST MS number 228308

All mass spectra in this site (plus many more) are available from the NIST/EPA/NIH Mass Spectral Library. Please see the following for information about the library and its accompanying search program.


UV/Visible spectrum

Go To: Top, Gas phase thermochemistry data, Condensed 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, Notes

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

Data compiled by: Victor Talrose, Alexander N. Yermakov, Alexy A. Usov, Antonina A. Goncharova, Axlexander N. Leskin, Natalia A. Messineva, Natalia V. Trusova, Margarita V. Efimkina

Spectrum

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UVVis spectrum
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Additional Data

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Source Mason, 1967
Owner INEP CP RAS, NIST OSRD
Collection (C) 2007 copyright by the U.S. Secretary of Commerce
on behalf of the United States of America. All rights reserved.
Origin INSTITUTE OF ENERGY PROBLEMS OF CHEMICAL PHYSICS, RAS
Source reference RAS UV No. 19848
Instrument Hilger Uvispek
Boiling point 32

Vibrational and/or electronic energy levels

Go To: Top, Gas phase thermochemistry data, Condensed phase thermochemistry data, Phase change data, Reaction thermochemistry data, Gas phase ion energetics data, Ion clustering data, IR Spectrum, Mass spectrum (electron ionization), UV/Visible spectrum, 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: Takehiko Shimanouchi

Symmetry:   C     Symmetry Number σ = 2


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

a1 1 CH str 3154  D 3154 VS p liq.
a1 2 CH str 3140  D 3140 sh gas
a1 3 ip-Ring II 1491  C 1491 VS gas 1483 VS p liq.
a1 4 ip-Ring III 1384  C 1384 M gas 1380 S p liq.
a1 5 ip-Ring IV 1140  D 1140 sh liq. 1137 VS p liq.
a1 6 CH ip-bend 1066  C 1066 S gas 1061 M p liq.
a1 7 CH ip-bend 995  C 995 VS gas 986 M p liq.
a1 8 ip-Ring VII 871  C 871 S gas
a2 9 CH op-bend 863  C  ia OC916, ν917, ν919, ν92)
a2 10 CH op-bend 728  D  ia 728 W dp liq.
a2 11 op-Ring I 613  D  ia 613 VW dp liq.
b1 12 CH str 3161  C 3161 M gas
b1 13 CH str 3129  C 3129 M gas 3121 S dp liq.
b1 14 ip-Ring I 1556  C 1556 W gas
b1 15 CH ip-bend 1267  C 1267 VW gas 1270 VW dp liq.
b1 16 CH ip-bend 1180  C 1180 VS gas 1171 W dp liq.
b1 17 ip-Ring V 1040  D 1040 sh liq. 1034 M dp liq.
b1 18 ip-Ring VI 873  D 873 W dp liq.
b2 19 CH op-bend 838  C 838 VW gas 839 W dp liq.
b2 20 CH op-bend 745  C 745 VS gas
b2 21 op-Ring II 603  C 603 S gas 601 W dp liq.

Source: Shimanouchi, 1972

Notes

VSVery strong
SStrong
MMedium
WWeak
VWVery weak
iaInactive
shShoulder
pPolarized
dpDepolarized
OCFrequency estimated from an overtone or a combination tone indicated in the parentheses.
C3~6 cm-1 uncertainty
D6~15 cm-1 uncertainty

References

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