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A scheme of atom equivalents for relating ab initio energies to heats of formation

✍ Scribed by Zhang Yala


Book ID
113257043
Publisher
Elsevier Science
Year
1990
Tongue
English
Weight
370 KB
Volume
207
Category
Article
ISSN
0166-1280

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πŸ“œ SIMILAR VOLUMES


Atom equivalents for relating ab initio
✍ Mustafa R. Ibrahim; Paul Von RaguΓ© Schleyer πŸ“‚ Article πŸ“… 1985 πŸ› John Wiley and Sons 🌐 English βš– 887 KB

Sets of atom equivalents have been developed which permit the estimation of heats of formation, AH0f2Yg), from ab initio total energies (3-21G and 6-31G\* basis sets). This extends the isodesmic reaction scheme of Pople and the group equivalents of Wiberg. A variety of small inorganic and organic mo

Group equivalents for converting ab init
✍ Kenneth B. Wiberg πŸ“‚ Article πŸ“… 1984 πŸ› John Wiley and Sons 🌐 English βš– 265 KB

Group equivalents which are useful for converting energies derived from ab initio calculations into enthalpies of formation have been obtained. They allow AHf to be estimated from 6-31G\* energies with an uncertainty on the order of k 2 kcal/mol.

Heats of formation of organic molecules
✍ Lawrence R. Schmitz; Yi Ren Chen πŸ“‚ Article πŸ“… 1994 πŸ› John Wiley and Sons 🌐 English βš– 695 KB

## Abstract A bond and group equivalent scheme that allows the calculation of heats of formation of alkenes from __ab initio__ 6‐31G\* energies has been developed. For a group of 26 compounds, the root mean square (rms) error for the calculated heat of formation was 0.78 kcal/mol. Heats of formatio