Benzenemethanol, α,α-diphenyl-
- Formula: C19H16O
- Molecular weight: 260.3297
- IUPAC Standard InChIKey: LZTRCELOJRDYMQ-UHFFFAOYSA-N
- CAS Registry Number: 76-84-6
- 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: Methanol, triphenyl-; Triphenylcarbinol; Triphenylmethanol; Triphenylmethyl alcohol; Tritanol; Trityl alcohol; NSC 4050
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Condensed phase thermochemistry 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:
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 |
---|---|---|---|---|---|
ΔfH°solid | -0.59 ± 0.54 | kcal/mol | Ccb | Parks, Manchester, et al., 1954 | Reanalyzed by Cox and Pilcher, 1970, Original value = -0.80 ± 0.60 kcal/mol; ALS |
ΔfH°solid | 8.49 | kcal/mol | Ccb | Schmidlin, 1906 | ALS |
Quantity | Value | Units | Method | Reference | Comment |
ΔcH°solid | -2332.90 ± 0.52 | kcal/mol | Ccb | Parks, Manchester, et al., 1954 | Reanalyzed by Cox and Pilcher, 1970, Original value = -2332.73 kcal/mol; Corresponding ΔfHºsolid = -0.59 kcal/mol (simple calculation by NIST; no Washburn corrections); ALS |
ΔcH°solid | -2342.0 | kcal/mol | Ccb | Schmidlin, 1906 | Corresponding ΔfHºsolid = 8.5 kcal/mol (simple calculation by NIST; no Washburn corrections); ALS |
Constant pressure heat capacity of solid
Cp,solid (cal/mol*K) | Temperature (K) | Reference | Comment |
---|---|---|---|
76.20 | 298.5 | Smith and Andrews, 1931 | T = 102 to 346 K. Value is unsmoothed experimental datum.; DH |
Phase change data
Go To: Top, Condensed phase thermochemistry 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
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
Tboil | 633.2 | K | N/A | Aldrich Chemical Company Inc., 1990 | BS |
Quantity | Value | Units | Method | Reference | Comment |
Tfus | 434.65 | K | N/A | Zeiss and Tsutsui, 1953 | Uncertainty assigned by TRC = 1.5 K; TRC |
Tfus | 433.65 | K | N/A | Lewis and Wright, 1952 | Uncertainty assigned by TRC = 1.5 K; TRC |
Tfus | 399. | K | N/A | Adkins, Zartman, et al., 1931 | Uncertainty assigned by TRC = 1.5 K; TRC |
Tfus | 435.6 | K | N/A | Smith and Andrews, 1931, 2 | Uncertainty assigned by TRC = 0.3 K; m.p. by Hg thermometer; TRC |
Tfus | 435.35 | K | N/A | Smith and Andrews, 1931, 2 | Uncertainty assigned by TRC = 0.3 K; f.p. by thermocouple; TRC |
Quantity | Value | Units | Method | Reference | Comment |
ΔsubH° | 29.11 ± 0.41 | kcal/mol | GS | Verevkin, 1998 | AC |
Enthalpy of sublimation
ΔsubH (kcal/mol) | Temperature (K) | Method | Reference | Comment |
---|---|---|---|---|
29.2 | 363. | A | Stephenson and Malanowski, 1987 | Based on data from 353. to 373. K.; AC |
Enthalpy of fusion
ΔfusH (kcal/mol) | Temperature (K) | Method | Reference | Comment |
---|---|---|---|---|
6.511 | 441.1 | DSC | Verevkin, 1998 | AC |
References
Go To: Top, Condensed phase thermochemistry data, Phase change data, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Parks, Manchester, et al., 1954
Parks, G.S.; Manchester, K.E.; Vaughan, L.M.,
Heats of combustion and formation of some alcohols, phenols, and ketones,
J. Chem. Phys., 1954, 22, 2089-2090. [all data]
Cox and Pilcher, 1970
Cox, J.D.; Pilcher, G.,
Thermochemistry of Organic and Organometallic Compounds, Academic Press, New York, 1970, 1-636. [all data]
Schmidlin, 1906
Schmidlin, M.J.,
Recherches chimiques et thermochimiques sur la constitution des rosanilines,
Ann. Chim. Phys., 1906, 1, 195-256. [all data]
Smith and Andrews, 1931
Smith, R.H.; Andrews, D.H.,
Thermal energy studies. I. Phenyl derivatives of methane,
ethane and some related compounds. J. Am. Chem. Soc., 1931, 53, 3644-3660. [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]
Zeiss and Tsutsui, 1953
Zeiss, H.H.; Tsutsui, M.,
The Carbon-Oxygen Absorption Band in the Infrared Spectra of Alcohols,
J. Am. Chem. Soc., 1953, 75, 897. [all data]
Lewis and Wright, 1952
Lewis, R.N.; Wright, J.R.,
J. Am. Chem. Soc., 1952, 74, 1253. [all data]
Adkins, Zartman, et al., 1931
Adkins, H.; Zartman, W.H.; Cramer, H.,
The Hydrogention of Certain Branched Compounds Over Nickel,
J. Am. Chem. Soc., 1931, 53, 1425. [all data]
Smith and Andrews, 1931, 2
Smith, R.H.; Andrews, D.H.,
Thermal Energy Studies I. Phenyl Derivatives of Methane, Ethane and Some Related Compounds,
J. Am. Chem. Soc., 1931, 53, 3644. [all data]
Verevkin, 1998
Verevkin, Sergey P.,
Structural Chemistry, 1998, 9, 5, 375-382, https://doi.org/10.1023/A:1022471228499
. [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]
Notes
Go To: Top, Condensed phase thermochemistry data, Phase change data, References
- Symbols used in this document:
Cp,solid Constant pressure heat capacity of solid Tboil Boiling point Tfus Fusion (melting) point ΔcH°solid Enthalpy of combustion of solid at standard conditions ΔfH°solid Enthalpy of formation of solid at standard conditions ΔfusH Enthalpy of fusion ΔsubH Enthalpy of sublimation ΔsubH° Enthalpy of sublimation at standard conditions - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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