1,1'-Diethyl-4,4'-bipyridine-1,1'-diium bis(1,1,3,3-tetracyano-2-ethoxypropenide): multiple C-H...N hydrogen bonds form a complex sheet structure

Setifi Z; Lehchili F; Setifi F; Beghidja A; Ng SW; Glidewell C

doi:10.1107/S2053229614004379

1,1'-Diethyl-4,4'-bipyridine-1,1'-diium bis(1,1,3,3-tetracyano-2-ethoxypropenide): multiple C-H...N hydrogen bonds form a complex sheet structure

Setifi Z ¹ , Lehchili F ² , Setifi F ³ , Beghidja A ² , Ng SW ⁴ , Glidewell C ⁵

Affiliations

¹ Département de Technologie, Faculté de Technologie, Université 20 Août 1955-Skikda, BP 26, Route d'El-Hadaiek, Skikda 21000, Algeria
² Unité de Recherche de Chimie de l'Environnement et Moléculaire Structurale (CHEMS), Université Constantine 1, Constantine 25000, Algeria
³ Laboratoire de Chimie, Ingénierie Moléculaire et Nanostructures (LCIMN), Université Ferhat Abbas Sétif 1, Sétif 19000, Algeria
⁴ Department of Chemistry, University of Malaya, 50603 Kuala Lumpur, Malaysia
⁵ School of Chemistry, University of St Andrews, Fife KY16 9ST, Scotland

Acta Crystallogr C Struct Chem, 2014 Mar;70(Pt 3):338-41.

PMID: 24594730 DOI: 10.1107/S2053229614004379

Abstract

In the title salt, C14H18N2(2+) · 2C9H5N4O(-), the 1,1'-diethyl-4,4'-bipyridine-1,1'-diium dication lies across a centre of inversion in the space group P21/c. In the 1,1,3,3-tetracyano-2-ethoxypropenide anion, the two independent -C(CN)2 units are rotated, in conrotatory fashion, out of the plane of the central propenide unit, making dihedral angles with the central unit of 16.0(2) and 23.0(2)°. The ionic components are linked by C-H...N hydrogen bonds to form a complex sheet structure, within which each cation acts as a sixfold donor of hydrogen bonds and each anion acts as a threefold acceptor of hydrogen bonds.

* Title and MeSH Headings from MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.