Ab initio SCF molecular orbital calculations have been performed to ascertain the conformational preferences of protonated, neutral, and deprotonated amidine [HC(=NH)NHz], using the 3-21G split valence basis set. The states of eight stable species, eight transition states, and four higher-order sadd
Conformational study of protonated, neutral, and deprotonated formamide
β Scribed by Theresa Julia Zielinski; Raymond Alcide Poirier; Michael Roy Peterson; Imre G. Csizmadia
- Book ID
- 102879344
- Publisher
- John Wiley and Sons
- Year
- 1982
- Tongue
- English
- Weight
- 709 KB
- Volume
- 3
- Category
- Article
- ISSN
- 0192-8651
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β¦ Synopsis
Abstract
Neutral, protonated, and deprotonated formamide isomers were studied at the 3β21G SCF level with complete geometry optimization. Ten stable structures, ten firstβorder saddle points, and three secondβorder saddle points (conformational maxima) are reported. [Total energies are reported in hartrees (1 hartree = 627.51 kcal/mol = 2625.5 kJ/mol) and energy differences are reported in kJ/mol (1 kJ/mol = 0.239 kcal/mol).] Rotational barriers and proton affinities are discussed and compared to isoelectronic amidine species.
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