A Simple Helix Based on 2,2′-biimidazole. Crystal and Molecular Structure of [Ag(NO3)(H2biim)]n
Silver(I) nitrate and 2,2′-biimidazole (H2biim) crystallize from an aqueous solution to afford a single-strand helix, as evidenced by X-ray crystallography. This assemblage is based on an approximate cis conformation of H2biim acting in concert with the preferred linear two-coordinate nature of the ligated silver(I) atom.
C. A. Hester et al., "A Simple Helix Based on 2,2′-biimidazole. Crystal and Molecular Structure of [Ag(NO3)(H2biim)]n," Polyhedron, Elsevier, Jan 1997.
The definitive version is available at http://dx.doi.org/10.1016/S0277-5387(97)00022-3
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