Group additivity for partial molal heat capacities and volumes of alkanes in methanol at 25�C

1981 ◽  
Vol 10 (4) ◽  
pp. 231-242 ◽  
Author(s):  
Raymond N. French ◽  
Cecil M. Criss
Keyword(s):  
Heat Capacities ◽  
Group Additivity ◽  
Partial Molal Heat Capacities

Molar heat capacities of alkanolamines from 299.1 to 397.8 K Group additivity and molecular connectivity analyses

1997 ◽  
Vol 93 (9) ◽  
pp. 1747-1750 ◽  
Author(s):  
Yadollah Maham ◽  
Loren G. Hepler ◽  
Alan E. Mather ◽  
Andrew W. Hakin ◽  
Robert A. Marriott
Keyword(s):  
Heat Capacities ◽  
Group Additivity ◽  
Molecular Connectivity

Heats of vaporization and gaseous heats of formation of some five- and six-membered ring alkenes

1979 ◽  
Vol 57 (17) ◽  
pp. 2302-2304 ◽  
Author(s):  
Richard Fuchs ◽  
L. Alan Peacock
Keyword(s):  
Gas Chromatography ◽  
Double Bond ◽  
Heat Capacities ◽  
Membered Ring ◽  
Heats Of Formation ◽  
Group Additivity ◽  
Liquid Heat ◽  
Heats Of Vaporization

The heats of vaporization of 1-methylcyclopentene, 3-methylcyclopentene, ethylidenecyclopentane, 1-ethylcyclopentene, methylenecyclohexane, allylcyclopentane, vinylcyclohexane, ethylidenecyclohexane, allylcyclohexane, 3,3-diethylpentane, 2,2,4,4-tetramethylpentane, and trans-2,2,5,5-tetramethyl-3-hexene have been measured by the gas chromatography – calorimetry method. These values have been combined with previously reported liquid heats of formation to give gaseous values of ΔHf. The results indicate that the internal double bond is favored by about 0.5 kcal over the exo in both 5- and 6-membered rings, but the endo–exo differences are much smaller than previously believed. Several of the liquid heat capacities that were measured were not well predicted by group additivity schemes.

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