Cycloheptane, cyclooctane and 1,3,5-cycloheptatriene. Low temperature thermal properties, vapor pressure and derived chemical thermodyamic properties

Journal Article · Wed Oct 31 23:00:00 EST 1956 · J. Am. Chem. Soc.; (United States)

DOI:https://doi.org/10.1021/ja01602a003· OSTI ID:7319829

Finke, H L; Scott, D W; Gross, M E; Messerly, J F; Waddington, G

From determinations of the low temperature thermal properties and vapor pressure of cycloheptane, cyclooctane and 1,3,5-cycloheptatriene, values of the entropy in the liquid and vapor states and the heat of vaporization, all at 298.16/sup 0/K, were obtained. These results and values of the heats of formation derivable from literature data were used to compute values of ..delta..Hf/sup 0/, ..delta..Ff/sup 0/, ..delta..Sf/sup 0/ and log/sub 10/ Kf for all three compounds in the liquid and vapor states at 298.16/sup 0/K. In the solid state the thermal behavior of each substance is complex; there are transitions between four different crystalline forms of cycloheptane, three of cyclooctane and two of 1,3,5-cycloheptatriene.

• Research Organization: Bureau of Mines, Bartlesville, OK
• OSTI ID: 7319829
• Journal Information: J. Am. Chem. Soc.; (United States), Journal Name: J. Am. Chem. Soc.; (United States) Vol. 78:21; ISSN JACSA
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400301* -- Organic Chemistry-- Chemical & Physicochemical Properties-- (-1987)
ALKANES
ALKENES
CYCLOALKANES
CYCLOALKENES
ENTHALPY
ENTROPY
FUSION HEAT
HYDROCARBONS
MEDIUM TEMPERATURE
ORGANIC COMPOUNDS
PHYSICAL PROPERTIES
SPECIFIC HEAT
THERMODYNAMIC PROPERTIES
TRANSITION HEAT
VAPOR PRESSURE
VAPORIZATION HEAT