STRUCTURE OF THE (2-ACETAMIDOBENZOYL)FORMATE ANION AS THE BENZAMIDINIUM SALT

Citation
Kc. Joshi et al., STRUCTURE OF THE (2-ACETAMIDOBENZOYL)FORMATE ANION AS THE BENZAMIDINIUM SALT, Acta crystallographica. Section C, Crystal structure communications, 50, 1994, pp. 1792-1794
Citations number
9
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Crystallography
ISSN journal
0108-2701
Volume
50
Year of publication
1994
Part
11
Pages
1792 - 1794
Database
ISI
SICI code
0108-2701(1994)50:<1792:SOT(AA>2.0.ZU;2-C
Abstract
The reaction of isatin with benzamidine hydrochloride in methanol yiel ds the title compound, benzamidium (2-acetamidobenzoyl)formate (C7H9N2 +.C10H8NO4-). In the benzamidinium cation the configuration about the exocyclic C atoms is planar, resulting in electron delocalization in t he C-N bonds. The C-O bond distances in the carboxylate moeity in the anion are very similar (average C-O = 1.237 Angstrom), indicating delo calization of the negative charge. Hydrogen bonds are present between the N atoms of the amidinium group and the O atoms of the carboxylate moeity of the anion. The N O distances vary between 2.819 (5) and 2.90 1 (5) Angstrom in the hydrogen bonds.