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Heats of formation of organic molecules by ab initio methods: Thiaalkanes

✍ Scribed by Norman L. Allinger; Linrong Yang; Ioan Motoc; Charles Bender; Jan K. Labanowski


Publisher
John Wiley and Sons
Year
1992
Tongue
English
Weight
330 KB
Volume
3
Category
Article
ISSN
1042-7163

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✦ Synopsis


The bond energy scheme for calculating heats of formation o f organic molecules from ab initio data (6-31G*) has been extended to include 24 compounds containing sulfur in the sulfide oxidation state. The m s deviation from the experimental values for these compounds is 0.54 kcallmol, which is approximately experimental error.


πŸ“œ SIMILAR VOLUMES


Heats of formation of organic molecules
✍ Norman L. Allinger; Lawrence R. Schmitz; Ioan Motoc; Charles Bender; Jan K. Laba πŸ“‚ Article πŸ“… 1992 πŸ› John Wiley and Sons 🌐 English βš– 344 KB

A bond and group equivalent scheme that allows the calculation of heats of formation for carboxylic acids and esters from ab initio 6-31G\* energies has been developed. For a group of 16 compounds, the rms error for the calculated heats of formation was 0.64 kcalimol. Heats of formation have been pr

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

Ab initio calculation of the heats of fo
✍ J.A. Montgomery Jr.; H.H. Michels; J.S. Francisco πŸ“‚ Article πŸ“… 1994 πŸ› Elsevier Science 🌐 English βš– 474 KB

The heats of formation of the trifluoromethanol (CFrOH) and carbonic difluoride (CFrO) molecules are calculated with theoretical methods of demonstrated high accuracy. The results are used to assess the accuracy of the reported value of the heat of formation of CF,O and to provide an accurate estima

Heats of formation of organic molecules
✍ Labanowski, Jan; Schmitz, Lawrence; Chen, Kuo-Hsiang; Allinger, Norman L. πŸ“‚ Article πŸ“… 1998 πŸ› John Wiley and Sons 🌐 English βš– 160 KB πŸ‘ 2 views

Heats of formation of alkanes have been calculated with an accuracy of better than 0.36 kcalrmol by using the total energy calculated by density functional theory, plus bond and group equivalents and statistical mechanical corrections. The necessary equivalents were assigned to bonds and groups in m