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4,4'-Dimethyl-1,1'-(p-phenyl-enedimethyl-ene)dipyridinium bis-[7,7,8,8-tetra-cyano-quinodimethanide(1-)].

ABSTRACT: In the title salt, C(20)H(22)N(2) (2+)·2C(12)H(4)N(4) (-), the cations and anions stack along the b axis into segregated columns. In the cation, which has a crystallographically imposed centre of symmetry, the dihedral angle between the benzene and pyridine rings is 89.14?(4)°. Centrosymmetrically related anions form dimers by ?-? stacking inter-actions, with centroid-centroid separations of 3.874?(4)?Å. The crystal packing is stabilized by inter-columnar C-H?N hydrogen bonds.

SUBMITTER: Liu GX 

PROVIDER: S-EPMC2979426 | biostudies-literature | 2010 May

REPOSITORIES: biostudies-literature

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4,4'-Dimethyl-1,1'-(p-phenyl-enedimethyl-ene)dipyridinium bis-[7,7,8,8-tetra-cyano-quinodimethanide(1-)].

Liu Guang-Xiang GX  

Acta crystallographica. Section E, Structure reports online 20100515 Pt 6

In the title salt, C(20)H(22)N(2) (2+)·2C(12)H(4)N(4) (-), the cations and anions stack along the b axis into segregated columns. In the cation, which has a crystallographically imposed centre of symmetry, the dihedral angle between the benzene and pyridine rings is 89.14 (4)°. Centrosymmetrically related anions form dimers by π-π stacking inter-actions, with centroid-centroid separations of 3.874 (4) Å. The crystal packing is stabilized by inter-columnar C-H⋯N hydrogen bonds. ...[more]

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