Crystal structure of (6,9-diacetyl-5,10,15,20-tetra-phenyl-secochlorinato)nickel(II).

Title compound , [Ni(CHNO)], a secochlorin nickel complex, was prepared by diol cleavage of a precursor -di-hydroxy-dimethyl-chlorin. Two crystallographically independent mol-ecules in the structure are related by pseudo-A lattice centering, with mol-ecules differing mainly by a rotation of one of the acetyls and an adjacent phenyl groups. The two mol-ecules have virtually identical conformations characterized by noticeable in-plane deformation in the A mode and a prominent out-of-plane deformation in the B (ruffling) mode. Directional inter-actions between mol-ecules are scarce, limited to just a few C-H⋯O contacts, and inter-molecular inter-actions are mostly dispersive in nature.