Abstract
In the title compound, [Zn(C72H44N4O8)(C6H4N2)] center dot C6H4N2 or [Zn(TPBP)(4CNpy] center dot (4-CNpy) [where TPBP and 4-CNpy are 5,10,15,20-(tetraphenylbenzoate) porphyrinate and 4-cyanopyridine, respectively], the Zn-II cation is chelated by four pyrrole-N atoms of the porphyrinate anion and coordinated by a pyridyl-N atom of the 4-CNpy axial ligand in a distorted square-pyramidal geometry. The average Zn-N(pyrrole) bond length is 2.060 (6) angstrom and the ZnN( 4-CNpy) bond length is 2.159 (2) angstrom. The zinc cation is displaced by 0.319 (1) angstrom from the N4C20 mean plane of the porphyrinate anion toward the 4-cyanopyridine axial ligand. This porphyrinate macrocycle exhibits major saddle and moderate ruffling and doming deformations. In the crystal, the [Zn(TPBP)(4-CNpy)] complex molecules are linked together via weak CH center dot center dot center dot N, C-H center dot center dot center dot O and C-H center dot center dot center dot pi interactions, forming supramolecular channels parallel to the c axis. The non-coordinating 4-cyanopyridine molecules are located in the channels and linked with the complex molecules, via weak CH center dot center dot center dot N interactions and pi-pi stacking or via weak C-H center dot center dot center dot O and C-H center dot center dot center dot pi interactions. The non-coordinating 4-cyanopyridine molecule is disordered over two positions with an occupancy ratio of 0.666 (4): 0.334 (4).