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. Issue 3 (15th March 2014)

• Record Type: Journal Article
• Authors: Setifi, Zouaoui; Lehchili, Fouzia; Setifi, Fatima; Beghidja, Adel; Ng, Seik Weng; Glidewell, Christopher
• Is Part Of: Acta crystallographica. Volume 70:Issue 3(2014:Mar.)
• Page Start: 338
• Page End: 341
• Publication Date: 2014-03-15
• Subjects: Crystallography -- Periodicals; Crystals -- Periodicals; 548.3
• DOI: 10.1107/S2053229614004379
• Languages: English
• ISSNs: 2053-2296

Abstract

<abstract abstract-type="main" xml:lang="en"> <title> <x xml:space="preserve">Abstract</x> </title> <p>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 <italic>P</italic>2₁/<italic>c</italic>. 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.</p> </abstract>