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
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In the title salt, C14H18N22+·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.
Setifi , Z , Lehchili , F , Setifi , F , Beghidja , A , Ng , S W & Glidewell , C 2014 , ' 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 ' , Acta Crystallographica Section C: Crystal Structure Communications , vol. 70 , no. 3 , pp. 338-341 . https://doi.org/10.1107/S2053229614004379
Acta Crystallographica Section C: Crystal Structure Communications
Copyright 2014 International Union of Crystallography
DescriptionThe authors acknowledge the Algerian ATRST (Agence The´matique de Recherche en Sciences et Technologie; PNR project) and the Ministry of Higher Education of Malaysia (grant No. UM.C/HIR-MOHE/SC/03) for financial support.
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