Crystal structure of 2(10),2(20)-bis­(2,6-di­chloro­phen­yl)-4,7,12,15-tetra­oxa-2(5,15)-nickel(II)porpyhrina-1,3(1,2)-dibenzena-cyclo­hepta­deca­phane-9-yne di­chloro­methane monosolvate

The asymmetric unit of the title compound, [Ni(C(52)H(34)Cl(4)N(4)O(4))]·CH(2)Cl(2), consists of two discrete complexes, which show significant differences in the conformation of the side chain. Each Ni(II) cation is coordinated by four nitro­gen atoms of a porphyrin mol­ecule within a square-planar coordination environment. Weak intra­molecular C—H⋯Cl and C—H⋯O inter­actions stabilize the mol­ecular conformation. In the crystal structure, discrete complexes are linked by C—H⋯Cl hydrogen-bonding inter­actions. In addition, the two unique di­chloro­methane solvate mol­ecules (one being disordered) are hydrogen-bonded to the Cl atoms of the chloro­phenyl groups of the porphyrin mol­ecules, thus stabilizing the three-dimensional arrangement. The crystal exhibits pseudo-ortho­rhom­bic metrics, but structure refinements clearly show that the crystal system is monoclinic and that the crystal is twinned by pseudo-merohedry.