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The title compound, [Ni(C48H24N8)(C5H5N)2].2CH4O, is a high-spin bis(pyridine)-NiII derivative of an antipodally [beta]-pyrrole-tetracyano-substituted meso-tetraphenylporphyrin. The [Ni(py)2{tpp(CN)4}] molecule [py is pyridine and tpp(CN)4 is 7,8,17,18-tetracyano-5,10,15,20-tetraphenylporphyrinato] lies on a crystallographic centre of symmetry, but its non-crystallographic symmetry is close to Dh. The core of the tpp(CN)4 porphyrin dianion is essentially planar. The high-spin state of the NiII cation leads to a lengthening of the Ni-N(pyrrole) bond distances relative to those present in the low-spin [NiIItpp] derivative. Moreover, the electron-withdrawing [beta]-pyrrole cyano substituents, which lie in the antipodal pyrrolic rings, cause an increase in the C7-C8 and the antipodal C7'-C8' bond distances as well as an opening of the C6-N2-C9 and the antipodal C6'-N2'-C9' bond angles.

Supporting information

cif

Crystallographic Information File (CIF)
Contains datablocks global, NitppCN4

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Supplementary material

CCDC reference: 129002

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