ADDITIVITY OF THERMODYNAMIC PROPERTIES OF ORGANIC-COMPOUNDS IN THE CRYSTALLINE STATE .1. ADDITIVE CALCULATIONS FOR THERMODYNAMIC PROPERTIESOF ALKANES, ALKENES, ALKANOLS, AND ALKANONES

Additive constants to estimate thermodynamic properties of the crystal s of alkanes, alkenes, alkanols, and alkanones in the range of T = 10- 160 K have been derived. A classification of effective atoms and effec tive bonds was used. The average discrepancy between calculated and ex perimental thermodynamic values for the crystals of organic compounds at temperatures from 30 K to the first solid-to-solid transition tempe rature does not exceed 3-5 times the estimated experimental error.