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Crystal structures of 2,2'-bipyridin-1-ium 1,1,3,3-tetracyano-2-ethoxyprop-2-en-1-ide and bis(2,2'-bipyridin-1-ium) 1,1,3,3-tetracyano-2-(dicyanomethylene)propane-1,3-diide.
Setifi Z, Valkonen A, Fernandes MA, Nummelin S, Boughzala H, Setifi F, Glidewell C. Setifi Z, et al. Acta Crystallogr E Crystallogr Commun. 2015 Apr 18;71(Pt 5):509-15. doi: 10.1107/S2056989015007306. eCollection 2015 May 1. Acta Crystallogr E Crystallogr Commun. 2015. PMID: 25995868 Free PMC article.
The anion exhibits approximate C 3 symmetry, consistent with extensive electronic delocalization, and the three independent C(CN)2 groups make dihedral angles of 23.8 (2), 27.0 (3) and 27.4 (2) with the central plane. The ions in (I) are linked by an N-HN hydrogen bond and …
The anion exhibits approximate C 3 symmetry, consistent with extensive electronic delocalization, and the three independent C(CN)2 groups ma …