Co-operative influence of co-crystallized solvent in sustaining supramolecular architectures of Zn(II)/Cd(II) homoleptic pyridyl functionalized dithiocarbamates complexes via non-covalent interactions

Homoleptic pyridyl-3(N) functionalized dithiocarbamate complexes namely, [Zn(L1)2]21 (L1 = (C5H4NCH2)2NCS2) and [Cd(L2)2] ∞2 (L2 = CH3C6H4CH2NCS2CH2C4H3O) have been synthesized and characterized by elemental analysis and different spectroscopic techniques. Single crystal structural studies reveal that compound 1 is binuclear while, 2 is polymeric structure. The presence of weak interactions between complexes and solvent molecules in the lattice results in one-dimensional and three-dimensional supramolecular structures of 1 and 2 respectively. In the case of complex 2, a rare and significant S···Cl chalcogen bonding interaction was found, which involve the solvent molecule in chain motifs. Complex 2 is a unique example of homoleptic metal dithiocarbamate complexes exhibiting such types of interactions. Complexes showed emission in the solid state. The TGA studies of complexes revealed that complex 1 would be a good precursor for the preparation of ZnS thin film via metal organic chemical vapor deposition (MOCVD).