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, M.A.; Nummelin, S.; Boughzala, H.; Setifi, F.; Glidewell, C.

doi:10.1107/S2056989015007306

Acta Crystallographica Section E
Acta Crystallographica
Section E CRYSTALLOGRAPHIC COMMUNICATIONS

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Figure 4
Part of the crystal structure of compound (I)

showing the overlap between pairs of inversion-related cations, viewed normal to the ring planes. For the sake of clarity, the unit-cell outline, the anions, and H atoms bonded to C atoms in the cations have all been omitted. Atoms marked with an asterisk (*) are at the symmetry position (−x, 1 − y, 1 − z).

CRYSTALLOGRAPHIC
COMMUNICATIONS

ISSN: 2056-9890

Volume 71| Part 5| May 2015| Pages 509-515

https://doi.org/10.1107/S2056989015007306

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