Scheme 2: Schematic representation of (a) mono- and (b-e) bi-metallic transition metal complexes of S2N2.
In light of our continuing research interest on the π-electron rich inorganic aromatic compounds, we now extend our study to the ligand property of cyclic S2N2 with mono- and bi-metallic transition metal fragments using detailed quantum mechanical calculations. Also note that, to the best of our knowledge, all the experimentally reported S2N2 transition metal complexes that are known so far contains one or more halogen ligands in the S2N2 σ- plane (Scheme 2).[22-24] Therefore, herein we aim to provide insight into the σ- and π-reactivity of S2N2 as a ligand and the role of halogens in the S2N2 transition metal complexes. Our results might help in expanding the ligand knowledge-base for the use of inorganic aromatic compounds in coordination chemistry.