Acta Crystallographica Section C

Crystal Structure Communications

Volume 62, Part 4 (April 2006)

organic compounds

sk1900 scheme

Acta Cryst. (2006). C62, o165-o169 [ doi:10.1107/S0108270106005002 ]

Simple hydrogen-bonded chains in 2,2'-bipyridinium thiocyanate, hydrogen-bonded chains of rings in 2,2'-bipyridinium picrate and hydrogen-bonded sheets in 2,2'-bipyridinium hydrogensulfate

S. J. Kavitha, K. Panchanatheswaran, J. N. Low, G. Ferguson and C. Glidewell

Abstract: In 2,2'-bipyridinium thiocyanate, C₁₀H₉N₂⁺·NCS^-, the cations are disordered over two sets of sites with occupancies of 0.845 (2) and 0.155 (2). The ions are linked into simple chains by a combination of N-HN and C-HN hydrogen bonds, regardless of the orientation of the cation. In 2,2'-bipyridinium picrate, C₁₀H₉N₂⁺·C₆H₂N₃O₇^-, the bond distances in the anion indicate a markedly non-classical electronic structure; the component ions are linked by a combination of six independent hydrogen bonds, viz. one of N-HO type and five of C-HO type, into a complex chain containing five distinct types of ring. The ions in 2,2'-bipyridinium hydrogensulfate, C₁₀H₉N₂⁺·HSO₄^-, are linked by a combination of five hydrogen bonds, viz. one each of O-HO and N-HO types, and three of C-HO type, into complex sheets built from two one-dimensional substructures, each in the form of a complex chain of rings.

Formula: C₁₀H₉N₂⁺·NCS^-, C₁₀H₉N₂⁺·C₆H₂N₃O₇^- and C₁₀H₉N₂⁺·HSO₄^-


	Structure factor file (CIF format) (109.6 kbytes) [ doi:10.1107/S0108270106005002/sk1900Isup2.hkl ] Contains datablock I

	Structure factor file (CIF format) (176.4 kbytes) [ doi:10.1107/S0108270106005002/sk1900IIsup3.hkl ] Contains datablock II

	Structure factor file (CIF format) (116.7 kbytes) [ doi:10.1107/S0108270106005002/sk1900IIIsup4.hkl ] Contains datablock III

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