Creatinium perchlorate

Abstract

The title compound, C4H8N3O+·ClO4 −, is built up from creatininium cations and perchlorate anions. Crystal cohesion and perchlorate stability are ensured by N—H⋯O hydrogen bonds that together with weak C—H⋯O inter­actions build up a three-dimensional network.

Synthesis, crystal structures, hydrogen bonding graph-sets and theoretical studies of nickel (+II) co-ordinations with pyridine-2,6-dicarboxamide oxime

“…All other refinement details are available in the CIF (CCDC: 1401464). (2) 8.2058 (12) 114.691 (19) 2323.6(6) The Valance bond sum (1.995 A°) [30][31][32] confirms that the nickel ion in our complex is as A°and 109.47° (17), respectively, confirming a tetrahedral configuration (Table 3 and 4), similar to other perchlorates studied at low temperature) [37][38][39].…”

Synthesis, quantum chemical computations and x-ray crystallographic studies of a new complex based of manganese (+II)

“…The asymmetric unit, formed by one Mn 2+ metal ion, two crystallographically independent oxime ligands and two perchlorate counter-ion located on general positions. The molecular structure of the compound showing the atom numbering scheme is shown in Figure. 1 (17), respectively, confirming a tetrahedral configuration , similar to other perchlorates studied at low temperature) [20,[22][23][24].…”

Hydrogen bonding in cytosinium dihydrogen phosphite

“…For hydrogen bonds, see: Blessing (1986); Masse & Levy (1991). For related structures, see: Bendheif et al (2003); Bouchouit et al (2005); Benali-Cherif, Abouimrane et al (2002); Benali-Cherif et al (2007); Benali-Cherif, Benguedouar et al (2002); Bendjeddou et al (2003); ; Cherouana, Bouchouit et al (2003); Messai et al (2009).…”

“…hydrogen bonds are most predominant in determining the formation of secondary structure elements in proteins, basepairing in nucleic acids and their biomolecular interactions. This structure analysis of cytosinium hydrogenphosphite (I) was undertaken as part of a more general investigation into the nature of hydrogen bonding between organic bases or amino acids and inorganic acids in their crystalline forms (Messai et al, 2009;Benali-Cherif, Abouimrane et al, 2002;Benali-Cherif, Benguedouar et al, 2002;Benali-Cherif et al, 2007).…”