The molecular and crystal structure of tetrakis(4-methylpyridine)cobalt(II) hexafluorophosphate

Abstract

Crystals of tetrakis(4-methylpyridine)cobalt(II) hexafluorophosphate, C24H28CoF12N4P2, are tetragonal, space group I41/acd, a = 18.434(7), c = 18.818(6) Å, Z = 8. The structure was solved by direct and Fourier methods. The positional and anisotropic thermal parameters were refined by full-matrix least-squares methods to R = 0.072 for 346 observed reflexions. The structure consists of discrete [Co(4-mepy)4]2+ and PF6− ions. The structure of the cation is a distorted tetrahedron of 4-methylpyridine ligands around cobalt (crystal symmetry S4) and that of the anion is a distorted octahedron of fluorines around phosphorus (crystal symmetry C2).