Toluene: thermodynamic properties, molecular vibrations, and internal rotation

Journal Article · Tue May 01 04:00:00 EDT 1962 · J. Phys. Chem.; (United States)

DOI:https://doi.org/10.1021/j100811a038· OSTI ID:7319839

Scott, D W; Guthrie, G B; Messerly, J F; Todd, S S; Berg, W T; Hossenlopp, I A; McCullough, J P

Low temperature calorimetry and vapor flow calorimetry were repeated for toluene with current accurate methods to provide the following information: values of heat capacity for the solid (11/sup 0/K. to the triple point), the liquid (triple point to 371/sup 0/K.), and the vapor (371 to 500/sup 0/K.); the triple point temperature; the heat of fusion; thermodynamic functions for the solid and liquid (0 to 360/sup 0/K.); heat of vaporization (341 to 410/sup 0/K.); and parameters of equation of state. The results were used to confirm a vibrational assignment and to show that the internal rotation is essentially free, as expected from the sixfold symmetry. Thermodynamic functions for toluene in the ideal gas state (0 to 1500/sup 0/K.) were calculated by methods of statistical mechanics.

• Research Organization: Bureau of Mines, Bartlesville, OK
• OSTI ID: 7319839
• Journal Information: J. Phys. Chem.; (United States), Journal Name: J. Phys. Chem.; (United States) Vol. 66; ISSN JPCHA
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400301* -- Organic Chemistry-- Chemical & Physicochemical Properties-- (-1987)
AROMATICS
CALORIMETRY
ENERGY LEVELS
ENTHALPY
EQUATIONS
EQUATIONS OF STATE
EXCITED STATES
FUSION HEAT
HYDROCARBONS
ORGANIC COMPOUNDS
PHYSICAL PROPERTIES
ROTATIONAL STATES
SPECIFIC HEAT
THERMODYNAMIC PROPERTIES
TOLUENE
TRANSITION HEAT
VAPORIZATION HEAT
VIBRATIONAL STATES