Hydrogen-bonded chain structure of a six-coordinate 5,10,15,20-tetraphenylporphinatomanganese(III) complex

In methanolic solutions, disproportionation of the TCNQ anion radical to neutral TCNQ0 and the dianion TCNQ2− followed by aerobic oxidation of TCNQ2− results in the formation of methyl-4-dicyanomethylene benzoate anion (MDCB−). This anion coordinates to the manganese(III) atom of 5,10,15,20-tetraphenylporphinatomanganese(III) leading to the complex whose X-ray crystal structure is reported. The crystal had the monoclinic space group P21/n with unit cell dimensions a=13.327(3), b=20.236(6), c=16.914(5) Å and β=92.26(2)°. An important driving force behind the crystal packing is a hydrogen bonding interaction between non-identical ligands of adjacent molecules.