Home Symbol which looks like a small house Up Solid circle with an upward pointer in it

2,2'-Dimethylbiphenyl

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.


Condensed phase thermochemistry data

Go To: Top, Phase change data, Gas phase ion energetics data, Mass spectrum (electron ionization), Gas Chromatography, 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: Eugene S. Domalski and Elizabeth D. Hearing

Quantity Value Units Method Reference Comment
liquid79.493cal/mol*KN/AChirico, Hossenloop, et al., 1987 

Constant pressure heat capacity of liquid

Cp,liquid (cal/mol*K) Temperature (K) Reference Comment
71.238298.15Chirico, Hossenloop, et al., 1987T = 10 to 400 K.

Phase change data

Go To: Top, Condensed phase thermochemistry data, Gas phase ion energetics data, Mass spectrum (electron ionization), Gas Chromatography, 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
DH - Eugene S. Domalski and Elizabeth D. Hearing

Quantity Value Units Method Reference Comment
Tboil531.KN/ACastro, Andrews, et al., 1958Uncertainty assigned by TRC = 4. K; TRC
Tboil531.KN/ABlades, Blades, et al., 1954Uncertainty assigned by TRC = 4. K; TRC
Tboil531.KN/ABerger, 1932Uncertainty assigned by TRC = 3. K; TRC
Tboil531.KN/AMayer and Freitak, 1921Uncertainty assigned by TRC = 4. K; TRC
Tboil530.KN/AMeyer and Hoffman, 1916Uncertainty assigned by TRC = 4. K; TRC
Quantity Value Units Method Reference Comment
Tfus320. ± 100.KAVGN/AAverage of 10 values; Individual data points
Quantity Value Units Method Reference Comment
Ttriple293.090KN/AChirico, Hossenlopp, et al., 1987Uncertainty assigned by TRC = 0.01 K; TRC

Enthalpy of sublimation

DeltasubH (kcal/mol) Temperature (K) Method Reference Comment
15.7285.MEPribilová and Pouchlý, 1974Based on data from 283. - 288. K. See also Stephenson and Malanowski, 1987.; AC

Enthalpy of fusion

DeltafusH (kcal/mol) Temperature (K) Reference Comment
0.54491293.091Chirico, Hossenloop, et al., 1987DH
0.545293.1Domalski and Hearing, 1996AC

Entropy of fusion

DeltafusS (cal/mol*K) Temperature (K) Reference Comment
1.86293.091Chirico, Hossenloop, et al., 1987DH

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:


Gas phase ion energetics data

Go To: Top, Condensed phase thermochemistry data, Phase change data, Mass spectrum (electron ionization), Gas Chromatography, 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:
LLK - Sharon G. Lias, Rhoda D. Levin, and Sherif A. Kafafi

Ionization energy determinations

IE (eV) Method Reference Comment
8.80 ± 0.05EILoudon and Mazengo, 1974LLK
8.05 ± 0.02PEMaier and Turner, 1972LLK

Appearance energy determinations

Ion AE (eV) Other Products MethodReferenceComment
C13H11+11.8 ± 0.2CH3EILoudon and Mazengo, 1974LLK
C14H13+12.2 ± 0.2HEILoudon and Mazengo, 1974LLK

Mass spectrum (electron ionization)

Go To: Top, Condensed phase thermochemistry data, Phase change data, Gas phase ion energetics data, Gas Chromatography, 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

Notice: This spectrum may be better viewed with a Javascript and HTML 5 enabled browser.

Mass spectrum
For Zoom
1.) Enter the desired X axis range (e.g., 100, 200)
2.) Check here for automatic Y scaling
3.) Press here to zoom

Additional Data

View image of digitized spectrum (can be printed in landscape orientation).

View spectrum image in SVG format.

Download spectrum in JCAMP-DX format.

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.
NIST MS number 7569

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.


Gas Chromatography

Go To: Top, Condensed phase thermochemistry data, Phase change data, Gas phase ion energetics data, Mass spectrum (electron ionization), 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

Kovats' RI, non-polar column, isothermal

View large format table.

Column type Active phase Temperature (C) I Reference Comment
PackedApiezon L170.1546.Kríz, Popl, et al., 1974 

Kovats' RI, polar column, isothermal

View large format table.

Column type Active phase Temperature (C) I Reference Comment
CapillarySP-1000185.1950.Kríz, Popl, et al., 1974N2; Column length: 50. m; Column diameter: 0.25 mm
CapillarySP-1000200.1916.Kríz, Popl, et al., 1974N2; Column length: 50. m; Column diameter: 0.25 mm

Lee's RI, non-polar column, temperature ramp

View large format table.

Column type Active phase I Reference Comment
CapillaryHP-5261.78Piao, Chu, et al., 199930. m/0.25 mm/0.25 «mu»m, 50. C @ 2. min, 4. K/min, 280. C @ 20. min
CapillaryDB-5243.90Rostad and Pereira, 198630. m/0.26 mm/0.25 «mu»m, He, 50. C @ 4. min, 6. K/min, 300. C @ 20. min
CapillarySE-52241.94Lee, Vassilaros, et al., 197912. m/0.3 mm/0.34 «mu»m, He, 2. K/min; Tstart: 50. C; Tend: 250. C

References

Go To: Top, Condensed phase thermochemistry data, Phase change data, Gas phase ion energetics data, Mass spectrum (electron ionization), Gas Chromatography, Notes

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

Chirico, Hossenloop, et al., 1987
Chirico, R.D.; Hossenloop, I.A.; Nguyen, A.; Strube, M.M.; Steele, W.V., Thermodynamic studies related to the hydrogenation of phenanthrene, NIPER Report, 1987, 247, 107p. [all data]

Castro, Andrews, et al., 1958
Castro, C.E.; Andrews, L.J.; Keefer, R.M., Molecular Complexes of Hindered Biphenyl Derivatives, J. Am. Chem. Soc., 1958, 80, 2322-6. [all data]

Blades, Blades, et al., 1954
Blades, H.; Blades, A.; Steacie, E.W.R., The Kinetics of Pyrolysis of Toluene, Can. J. Chem., 1954, 32, 298-311. [all data]

Berger, 1932
Berger, H., J. Prakt. Chem., 1932, 133, 331. [all data]

Mayer and Freitak, 1921
Mayer, F.; Freitak, K., Chem. Ber., 1921, 54, 347. [all data]

Meyer and Hoffman, 1916
Meyer; Hoffman, Sitzungsber. Akad. Wiss. Wien, Math.-Naturwiss. Kl., Abt. 2B, 1916, 125, 449. [all data]

Chirico, Hossenlopp, et al., 1987
Chirico, R.D.; Hossenlopp, I.A.; Nguyen, A.; Steele, W.V., Thermochem. and Thermophys. Prop. of Organic Compounds Derived from Fossil Substances. Thermodynamic Studies Related to the Hydrogenation of Anthracene, Natl. Inst. Pet. Energy Res. Rep. NIPER-239, Bartlesvill- e, OK, 1987. [all data]

Pribilová and Pouchlý, 1974
Pribilová, J.; Pouchlý, J., Vapour pressure of some low-volatile hydrocarbons determined by the effusion method, Collect. Czech. Chem. Commun., 1974, 39, 5, 1118-1124, https://doi.org/10.1135/cccc19741118 . [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]

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]

Loudon and Mazengo, 1974
Loudon, A.G.; Mazengo, R.Z., Steric strain and electron-impact. The behaviour of some n, n'-dimethyl- 1,1-binaphthyls, some n, n'-dimethylbiphenyls and model compounds, Org. Mass Spectrom., 1974, 8, 179. [all data]

Maier and Turner, 1972
Maier, J.P.; Turner, D.W., Steric inhibition of resonance studied by molecular photoelectron spectroscopy. Part I. Biphenyls, Faraday Discuss. Chem. Soc., 1972, 54, 149. [all data]

Kríz, Popl, et al., 1974
Kríz, J.; Popl, M.; Mostecký, J., Retention indices of biphenyls and diphenylalkanes, J. Chromatogr., 1974, 97, 1, 3-13, https://doi.org/10.1016/S0021-9673(01)97577-6 . [all data]

Piao, Chu, et al., 1999
Piao, M.; Chu, S.; Zheng, M.; Xu, X., Characterization of the combustion products of polyethylene, Chemosphere, 1999, 39, 9, 1497-1512, https://doi.org/10.1016/S0045-6535(99)00054-5 . [all data]

Rostad and Pereira, 1986
Rostad, C.E.; Pereira, W.E., Kovats and Lee retention indices determined by gas chromatography/mass spectrometry for organic compounds of environmental interest, J. Hi. Res. Chromatogr. Chromatogr. Comm., 1986, 9, 6, 328-334, https://doi.org/10.1002/jhrc.1240090603 . [all data]

Lee, Vassilaros, et al., 1979
Lee, M.L.; Vassilaros, D.L.; White, C.M.; Novotny, M., Retention Indices for Programmed-Temperature Capillary-Column Gas Chromatography of Polycyclic Aromatic Hydrocarbons, Anal. Chem., 1979, 51, 6, 768-773, https://doi.org/10.1021/ac50042a043 . [all data]


Notes

Go To: Top, Condensed phase thermochemistry data, Phase change data, Gas phase ion energetics data, Mass spectrum (electron ionization), Gas Chromatography, References