Cooperative influence of ligand frameworks in sustaining supramolecular architectures of Ni(II)/Pd(II) heteroleptic dithio-dipyrrin complexes via non-covalent interactions

Three new heteroleptic Ni(II)/Pd(II) dithio-dipyrrin complexes have been synthesized and structurally characterized. In 3, a cyclic analog of benzene has been created via dimer formation between two C-H…N intermolecular hydrogen bonds; the dimers are subsequently held together by C-H…π (NiCS2, chelate) interactions to create a 2D supramolecular architecture.