GUANIDINIUM HYDROGEN SQUARATE

Authors
KOLEV T PREUT H BLECKMANN P RADOMIRSKA V
Citation
T. Kolev et al., GUANIDINIUM HYDROGEN SQUARATE, Acta crystallographica. Section C, Crystal structure communications, 53, 1997, pp. 805-807
Citations number
14
Categorie Soggetti
Crystallography
Journal title
Acta crystallographica. Section C, Crystal structure communications → ACNP
ISSN journal
01082701
Volume
53
Year of publication
1997
Part
6
Pages
805 - 807
Database
ISI
SICI code
0108-2701(1997)53:<805:GHS>2.0.ZU;2-F
Abstract
The unit cell contains two crystallographically independent formula un its, CH6N3+.C4HO4-, that are connected via a three-dimensional network of hydrogen bonds. Two crystallographically independent anion-cation chains are formed and arranged in two crystallographically independent layers and stacked along the b axis. The guanidine molecule accepts a proton from the squaric acid. Anions and cations are nearly planar. I n the anions, the C-O and especially the C-C bond lengths differ signi ficantly, and the C-C-C angles deviate significantly from 90 degrees.