Diphenylmethane
- Formula: C13H12
- Molecular weight: 168.2344
- IUPAC Standard InChIKey: CZZYITDELCSZES-UHFFFAOYSA-N
- CAS Registry Number: 101-81-5
- 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. - Other names: Benzene, 1,1'-methylenebis-; Methane, diphenyl-; Benzene, (phenylmethyl)-; Benzylbenzene; Ditan; Ditane; Benzene, benzyl-; Toluene, α-phenyl-; 1,1'-Dimethylenebis(benzene); NSC 4708
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Gas phase thermochemistry data
Go To: Top, IR Spectrum, UV/Visible spectrum, 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:
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 |
---|---|---|---|---|---|
ΔfH°gas | 165. ± 2.2 | kJ/mol | Review | Roux, Temprado, et al., 2008 | There are sufficient literature values to make a qualified recommendation where the suggested value is in good agreement with values predicted using thermochemical cycles or from reliable estimates. In general, the evaluated uncertainty limits are on the order of (2 to 4) kJ/mol.; DRB |
ΔfH°gas | 162.3 ± 2.3 | kJ/mol | Review | Roux, Temprado, et al., 2008 | There are sufficient literature values to make a qualified recommendation where the suggested value is in good agreement with values predicted using thermochemical cycles or from reliable estimates. In general, the evaluated uncertainty limits are on the order of (2 to 4) kJ/mol.; DRB |
ΔfH°gas | 164.8 ± 1.6 | kJ/mol | Ccb | Steele, Chirico, et al., 1995 | ALS |
ΔfH°gas | 156.6 | kJ/mol | N/A | Parks and Mosley, 1950 | Value computed using ΔfHliquid° value of 88.9 kj/mol from Parks and Mosley, 1950 and ΔvapH° value of 67.7 kj/mol from Steele, Chirico, et al., 1995.; DRB |
Quantity | Value | Units | Method | Reference | Comment |
S°gas | 436. | J/mol*K | N/A | Marcus Y., 1986 | This value calculated from published spectroscopic and structural data is in close agreement with estimations by a method of increments (440-451 J/mol*K [85MAR/LOE, Dorofeeva O.V., 1997]). Value obtained from calorimetric data (508.5 J/mol*K [85MAR/LOE]) authors do not regard as reliable. Results of statistical thermodynamics calculation [ Puranik P.G., 1962] are likely to be erroneous (S(300 K)=319 J/mol*K).; GT |
IR Spectrum
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Data compiled by: Coblentz Society, Inc.
- LIQUID (NEAT) $$ PURITY - ANALYTICAL; PERKIN-ELMER 180 (GRATING); DIGITIZED BY COBLENTZ SOCIETY (BATCH II) FROM HARD COPY; 2 cm-1 resolution
- SOLUTION (10% IN CCl4 FOR 3800-1300, 2% IN CS2 FOR 1300-650, AND 10% IN CCl4 FOR 650-250 CM-1) VERSUS SOLVENT; Not specified, most likely a grating or hybrid spectrometer.; DIGITIZED BY NIST FROM HARD COPY (FROM TWO SEGMENTS); 4 cm-1 resolution
Data compiled by: NIST Mass Spectrometry Data Center, William E. Wallace, director
UV/Visible spectrum
Go To: Top, Gas phase thermochemistry data, IR Spectrum, 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: Victor Talrose, Eugeny B. Stern, Antonina A. Goncharova, Natalia A. Messineva, Natalia V. Trusova, Margarita V. Efimkina
Spectrum
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Additional Data
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Source | Kortum and Dreesen, 1951 |
---|---|
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. 5690 |
Instrument | Spectrograph 110c Fuess or Zeiss |
Melting point | 25.2 |
Boiling point | 265 |
Gas Chromatography
Go To: Top, Gas phase thermochemistry data, IR Spectrum, 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: NIST Mass Spectrometry Data Center, William E. Wallace, director
Kovats' RI, non-polar column, isothermal
Column type | Active phase | Temperature (C) | I | Reference | Comment |
---|---|---|---|---|---|
Capillary | OV-1 | 200. | 1448.7 | Giumanini, Verardo, et al., 2001 | |
Capillary | SE-30 | 100. | 1414.6 | Tudor, 1997 | 40. m/0.35 mm/0.35 μm |
Capillary | DB-1 | 160.00 | 1423.5 | van Haelst, van der Wielen, et al., 1996 | 30. m/0.32 mm/0.25 μm, He |
Capillary | DB-1 | 170.00 | 1429.8 | van Haelst, van der Wielen, et al., 1996 | 30. m/0.32 mm/0.25 μm, He |
Capillary | OV-101 | 140. | 1412.4 | Gerasimenko, Kirilenko, et al., 1981 | N2; Column length: 50. m; Column diameter: 0.3 mm |
Capillary | OV-101 | 160. | 1429.4 | Gerasimenko, Kirilenko, et al., 1981 | N2; Column length: 50. m; Column diameter: 0.3 mm |
Packed | SE-30 | 150. | 1415. | Shlyakhov, Anvaer, et al., 1975 | |
Packed | SE-30 | 200. | 1449. | Shlyakhov, Anvaer, et al., 1975 | |
Packed | Apiezon L | 150. | 1458. | Shlyakhov, Anvaer, et al., 1975 |
Kovats' RI, polar column, temperature ramp
Column type | Active phase | I | Reference | Comment |
---|---|---|---|---|
Capillary | Carbowax 20M | 1980. | Toda, Mihara, et al., 1983 | 2. K/min; Column length: 50. m; Column diameter: 0.23 mm; Tstart: 80. C; Tend: 200. C |
Capillary | Carbowax 20M | 1984. | Toda, Mihara, et al., 1983 | 2. K/min; Column length: 50. m; Column diameter: 0.23 mm; Tstart: 80. C; Tend: 200. C |
Van Den Dool and Kratz RI, non-polar column, temperature ramp
Column type | Active phase | I | Reference | Comment |
---|---|---|---|---|
Capillary | OV-1 | 1405.2 | Gautzsch and Zinn, 1996 | 8. K/min; Tstart: 35. C; Tend: 300. C |
Capillary | SE-54 | 1418.1 | Shapi and Hesso, 1990 | 25. m/0.32 mm/0.15 μm, He, 40. C @ 1. min, 5. K/min, 280. C @ 15. min |
Van Den Dool and Kratz RI, non-polar column, custom temperature program
Column type | Active phase | I | Reference | Comment |
---|---|---|---|---|
Capillary | CP-Sil5 CB MS | 1403.9 | Helmig, Bocquet, et al., 2004 | 60. m/0.32 mm/0.25 μm, He; Program: 40C(1min) => 25C/min => 120C => 2C/min => 190C => 25C/min => 250C (5min) |
Capillary | DB-1 | 1380.1 | Helmig, Bocquet, et al., 2004 | 30. m/0.32 mm/0.1 μm, He; Program: 40C(5min) => 20C/min => 100C => 2C/min => 160C => 40C/min => 250C (5min) |
Capillary | DB-1 | 1389.6 | Helmig, Bocquet, et al., 2004 | 30. m/0.32 mm/0.25 μm, He; Program: 40C(5min) => 20C/min => 100C => 2C/min => 160C => 40C/min => 250C (5min) |
Normal alkane RI, non-polar column, isothermal
Column type | Active phase | Temperature (C) | I | Reference | Comment |
---|---|---|---|---|---|
Capillary | OV-101 | 120. | 1412. | Nabivach and Gerasimenko, 1996 | |
Capillary | Polidimethyl siloxane | 130. | 1401. | Nabivach and Gerasimenko, 1996 | |
Capillary | Polidimethyl siloxane | 130. | 1406. | Nabivach and Gerasimenko, 1996 |
Normal alkane RI, non-polar column, temperature ramp
Column type | Active phase | I | Reference | Comment |
---|---|---|---|---|
Capillary | Ultra-1 | 1400. | Elizalde-González, Hutfliess, et al., 1996 | 50. m/0.2 mm/0.33 μm, H2, 3. K/min, 300. C @ 35. min; Tstart: 60. C |
Capillary | Ultra-1 | 1393. | Okumura, 1991 | 25. m/0.32 mm/0.25 μm, He, 3. K/min; Tstart: 80. C; Tend: 260. C |
Normal alkane RI, non-polar column, custom temperature program
Column type | Active phase | I | Reference | Comment |
---|---|---|---|---|
Capillary | HP-1 | 1424. | Grigor'ev, Bozhko, et al., 2009 | Helium; Program: not specified |
Capillary | DB-1 | 1380.1 | Helmig, Revermann, et al., 2003 | 30. m/0.32 mm/0.1 μm, He; Program: 40C (2min) => 20C/min => 80C => 3C/min => 145C => 45C/min => 225C (3min) |
Capillary | DB-1 | 1416. | Peng, 1996 | 30. m/0.53 mm/1.5 μm; Program: 40 0C (4 min) 8 0C/min -> 200 0C (1 min) 5 0C/min -> 280 0C (20 min) |
Capillary | Methyl Silicone | 1403. | Zenkevich, 1994 | Program: not specified |
Capillary | OV-1, SE-30, Methyl silicone, SP-2100, OV-101, DB-1, etc. | 1461. | Waggott and Davies, 1984 | Hydrogen; Column length: 50. m; Column diameter: 0.32 mm; Program: not specified |
Normal alkane RI, polar column, custom temperature program
Column type | Active phase | I | Reference | Comment |
---|---|---|---|---|
Capillary | DB-Wax | 1994. | Peng, 1996 | 30. m/0.53 mm/1.0 μm; Program: 40 0C (4 min) 4 0C/min -> 200 0C (20 min) |
Capillary | DB-Wax | 1994. | Peng, Yang, et al., 1991 | Program: not specified |
Lee's RI, non-polar column, temperature ramp
Column type | Active phase | I | Reference | Comment |
---|---|---|---|---|
Capillary | HP-5 | 247.0 | Wang, Hou, et al., 2007 | 30. m/0.30 mm/0.25 μm, Helium, 50. C @ 5. min, 5. K/min, 200. C @ 15. min |
Capillary | HP-5 | 241.6 | Shao, Wang, et al., 2006 | 30. m/0.3 mm/0.25 μm, He, 50. C @ 5. min, 5. K/min, 200. C @ 15. min |
Capillary | HP-5 | 249.09 | Marynowski, Pieta, et al., 2004 | 60. m/0.25 mm/0.25 μm, He, 3. K/min; Tstart: 35. C; Tend: 300. C |
Capillary | HP-5 | 249.09 | Marynowski, Pieta, et al., 2004 | 60. m/0.25 mm/0.25 μm, He, 3. K/min; Tstart: 35. C; Tend: 300. C |
Capillary | HP-5 | 245.77 | Piao, Chu, et al., 1999 | 30. m/0.25 mm/0.25 μm, 50. C @ 2. min, 4. K/min, 280. C @ 20. min |
Capillary | BPX-5 | 243.4 | Schwarzbauer, Franke, et al., 1999 | 50. m/0.25 mm/0.25 μm, He, 50. C @ 3. min, 3. K/min; Tend: 300. C |
Capillary | CP Sil 8 CB | 245.6 | Bundt, Herbel, et al., 1991 | 50. m/0.25 mm/0.25 μm, He, 4. K/min; Tstart: 80. C; Tend: 300. C |
Capillary | SE-54 | 245.56 | Guillén, Blanco, et al., 1989 | 20. m/0.22 mm/0.20 μm, He, 4. K/min; Tstart: 50. C; Tend: 300. C |
Capillary | SE-52 | 243.35 | Lee, Vassilaros, et al., 1979 | 12. m/0.3 mm/0.34 μm, He, 2. K/min; Tstart: 50. C; Tend: 250. C |
Lee's RI, non-polar column, custom temperature program
Column type | Active phase | I | Reference | Comment |
---|---|---|---|---|
Capillary | CP Sil 8 CB | 245.6 | Bundt, Herbel, et al., 1991 | 50. m/0.25 mm/0.25 μm, He; Program: not specified |
References
Go To: Top, Gas phase thermochemistry data, IR Spectrum, UV/Visible spectrum, Gas Chromatography, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Roux, Temprado, et al., 2008
Roux, M.V.; Temprado, M.; Chickos, J.S.; Nagano, Y.,
Critically Evaluated Thermochemical Properties of Polycyclic Aromatic Hydrocarbons,
J. Phys. Chem. Ref. Data, 2008, 37, 4, 1855-1996. [all data]
Steele, Chirico, et al., 1995
Steele, W.V.; Chirico, R.D.; Smith, N.K.,
The standard enthalpies of formation of 2-methylbiphenyl and diphenylmethane,
J. Chem. Thermodyn., 1995, 27, 671-678. [all data]
Parks and Mosley, 1950
Parks, G.S.; Mosley, J.R.,
Redetermination of the heat of combustion of diphenylmethane,
J. Am. Chem. Soc., 1950, 72, 1850. [all data]
Marcus Y., 1986
Marcus Y.,
Entropies of tetrahedral M-phenyl species,
J. Chem. Soc., Faraday Trans. 1, 1986, 82, 993-1006. [all data]
Dorofeeva O.V., 1997
Dorofeeva O.V.,
Unpublished results. Thermocenter of Russian Academy of Science, Moscow, 1997. [all data]
Puranik P.G., 1962
Puranik P.G.,
Vibrational spectra, potential constants, and thermodynamic properties of diphenylmethane,
Proc. Indian Acad. Sci., 1962, A56, 233-238. [all data]
Kortum and Dreesen, 1951
Kortum, G.; Dreesen, G.,
Uber die konstitutions-abhangigkeit der schwingungsstruktur im absoprtionsspektrum von aromatischen kohlenwasserstoffen,
Chem. Ber., 1951, 84, 2, 182-203. [all data]
Giumanini, Verardo, et al., 2001
Giumanini, A.G.; Verardo, G.; Soják, L.; Kubinec, R.; Perjéssy, A.,
Identification of mononitro and dinitro isomers of diphenylmethane by GC-FT-IR and GC-MS techniques,
Ind. Eng. Chem. Res., 2001, 40, 6, 1449-1453, https://doi.org/10.1021/ie000667u
. [all data]
Tudor, 1997
Tudor, E.,
Temperature dependence of the retention index for perfumery compounds on a SE-30 glass capillary column. I. Linear equations,
J. Chromatogr. A, 1997, 779, 1-2, 287-297, https://doi.org/10.1016/S0021-9673(97)00453-6
. [all data]
van Haelst, van der Wielen, et al., 1996
van Haelst, Anniek G.; van der Wielen, Frans W.M.; Govers, Harrie A.J.,
Gas chromatographic determination of liquid vapour pressure and heat of vaporization of tetrachlorobenzyltoluenes,
Journal of Chromatography A, 1996, 727, 2, 265-273, https://doi.org/10.1016/0021-9673(95)01146-3
. [all data]
Gerasimenko, Kirilenko, et al., 1981
Gerasimenko, V.A.; Kirilenko, A.V.; Nabivach, V.M.,
Capillary gas chromatography of aromatic compounds found in coal tar fractions,
J. Chromatogr., 1981, 208, 1, 9-16, https://doi.org/10.1016/S0021-9673(00)87953-4
. [all data]
Shlyakhov, Anvaer, et al., 1975
Shlyakhov, A.F.; Anvaer, B.I.; Zolotareva, O.V.; Romina, N.N.; Novikova, N.V.; Koreshkova, R.I.,
On the possibility of group indentification of hydrocarbons by gas chromatography from temperature coefficients of retention indices,
Zh. Anal. Khim., 1975, 30, 788-792. [all data]
Toda, Mihara, et al., 1983
Toda, H.; Mihara, S.; Umano, K.; Shibamoto, T.,
Photochemical studies on jasmin oil,
J. Agric. Food Chem., 1983, 31, 3, 554-558, https://doi.org/10.1021/jf00117a022
. [all data]
Gautzsch and Zinn, 1996
Gautzsch, R.; Zinn, P.,
Use of incremental models to estimate the retention indexes of aromatic compounds,
Chromatographia, 1996, 43, 3/4, 163-176, https://doi.org/10.1007/BF02292946
. [all data]
Shapi and Hesso, 1990
Shapi, M.M.; Hesso, A.,
Thermal decomposition of polystyrene volatile compounds from large-scale pyrolysis,
J. Anal. Appl. Pyrolysis, 1990, 18, 2, 143-161, https://doi.org/10.1016/0165-2370(90)80004-8
. [all data]
Helmig, Bocquet, et al., 2004
Helmig, D.; Bocquet, F.; Pollmann, J.; Revermann, T.,
Analytical techniques for sesquiterpene emission rate studies in vegetation enclosure experiments,
Atmos. Environ., 2004, 38, 4, 557-572, https://doi.org/10.1016/j.atmosenv.2003.10.012
. [all data]
Nabivach and Gerasimenko, 1996
Nabivach, V.M.; Gerasimenko, V.A.,
Gas chromatographic retention characteristics of bicyclic aromatic hydrocarbons,
Coke and Chemistry (Rus), 1996, 6, 27-31. [all data]
Elizalde-González, Hutfliess, et al., 1996
Elizalde-González, M.P.; Hutfliess, M.; Hedden, K.,
Retention index system, adsorption characteristics, and sructure correlations of polycyclic aromatic hydrocarbons in fuels,
J. Hi. Res. Chromatogr., 1996, 19, 6, 345-352, https://doi.org/10.1002/jhrc.1240190608
. [all data]
Okumura, 1991
Okumura, T.,
retention indices of environmental chemicals on methyl silicone capillary column,
Journal of Environmental Chemistry (Japan), 1991, 1, 2, 333-358, https://doi.org/10.5985/jec.1.333
. [all data]
Grigor'ev, Bozhko, et al., 2009
Grigor'ev, A.M.; Bozhko, E.S.; Rudakova, L.V.,
Use of correlation between retention indices on low-polarity phases for screening comp-lex mixtures by gas chromatography-mass spectrometry,
Rus. J. Anal. Chem., 2009, 64, 2, 140-143, https://doi.org/10.1134/S1061934809020087
. [all data]
Helmig, Revermann, et al., 2003
Helmig, D.; Revermann, T.; Pollmann, J.; Kaltschmidt, O.; Hernández, A.J.; Bocquet, F.; David, D.,
Calibration system and analytical considerations for quantitative sesquiterpene measurements in air,
J. Chromatogr. A, 2003, 1002, 1-2, 193-211, https://doi.org/10.1016/S0021-9673(03)00619-8
. [all data]
Peng, 1996
Peng, C.T.,
Gas chromatographic identification of aromatic hydrocarbons
in Liquid Scintillation Spectrometry, Cook, G.T.; Harkness, D.D.; MacKenzie, A.B.; Miller, B.F.; Scott, E.M., ed(s)., 1996, 221-232. [all data]
Zenkevich, 1994
Zenkevich, I.G.,
Contemporary State of Informational Maintenance for Gas Chromatographic Identification of Chlorinated Polycyclic Aromatic Compounds,
Zh. Ecol. Khim., 1994, 3, 2, 111-119. [all data]
Waggott and Davies, 1984
Waggott, A.; Davies, I.W.,
Identification of organic pollutants using linear temperature programmed retention indices (LTPRIs) - Part II, 1984, retrieved from http://dwi.defra.gov.uk/research/completed-research/reports/dwi0383.pdf. [all data]
Peng, Yang, et al., 1991
Peng, C.T.; Yang, Z.C.; Ding, S.F.,
Prediction of rentention idexes. II. Structure-retention index relationship on polar columns,
J. Chromatogr., 1991, 586, 1, 85-112, https://doi.org/10.1016/0021-9673(91)80028-F
. [all data]
Wang, Hou, et al., 2007
Wang, G.; Hou, Z.; Sun, Y.; Liu, Y.; Xie, B.; Liu, S.,
Investigation of pyrolysis behavior of fenoxycarb using PY-GC-MS assisted with chemometric methods,
Chem. Anal., 2007, 52, 141-156. [all data]
Shao, Wang, et al., 2006
Shao, X.; Wang, G.; Sun, Y.; Zhang, R.; Xie, K.; Liu, H.,
Determination and Characterization of the Pyrolysis Products of Isoprocarb by GC-MS,
J. Chromatogr. Sci., 2006, 44, 3, 141-147, https://doi.org/10.1093/chromsci/44.3.141
. [all data]
Marynowski, Pieta, et al., 2004
Marynowski, L.; Pieta, M.; Janeczek, J.,
Composition and source of polycyclic aromatic compounds in deposited dust from selected sites around the Upper Silesia, Poland,
Geol. Q., 2004, 48, 2, 169-180. [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]
Schwarzbauer, Franke, et al., 1999
Schwarzbauer, J.; Franke, S.; Francke, W.,
Chlorinated di- and triphenylmethanes in sediments of the Mulde and Elbe rivers. Part IV of organic compounds as contaminants of the Elbe river and its tributaries,
Fresenius J. Anal. Chem., 1999, 365, 6, 529-536, https://doi.org/10.1007/s002160051517
. [all data]
Bundt, Herbel, et al., 1991
Bundt, J.; Herbel, W.; Steinhart, H.; Franke, S.; Francke, W.,
Structure-type separation of diesel fuels by solid phase extraction and identification of the two- and three-ring aromatics by capillary GC-mass spectrometry,
J. Hi. Res. Chromatogr., 1991, 14, 2, 91-98, https://doi.org/10.1002/jhrc.1240140205
. [all data]
Guillén, Blanco, et al., 1989
Guillén, M.D.; Blanco, J.; Bermejo, J.; Blanco, C.G.,
Temperature programmed retention indices of some PAHs on Capillary columns coated with OV-1701 and SE-54,
J. Hi. Res. Chromatogr., 1989, 12, 8, 552-554, https://doi.org/10.1002/jhrc.1240120816
. [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, Gas phase thermochemistry data, IR Spectrum, UV/Visible spectrum, Gas Chromatography, References
- Symbols used in this document:
S°gas Entropy of gas at standard conditions ΔfH°gas Enthalpy of formation of gas at standard conditions - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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