Structural diversity in supramolecular architectures of Mn(II) through non-covalent interactions

Abstract

Two mononuclear complexes of manganese(II), [Mn(OCN)₂(phen)₂] <b>1</b> and [Mn (NCO)₂(bpy)₂] <b>2</b> [1,10-phenanthroline (phen): 2,2'-bipyridine (bpy)], have been synthesized and characterized by single crystal X-ray analysis, infra-red spectroscopy and magnetic studies. The coordination structure of complex <b>2</b> is already reported. The cyanate anions are pendent in both the complexes. In <b>1</b>, cyanate anion links manganese(II) through O-atom, whereas in <b>2</b> it coordinates through N-atom. The mononuclear fragments of <b>1</b> are built up to a supramolceular lamellar 3D architecture by π-π interactions only. On the other hand, mononuclear fragments of <b>2</b> are assembled to a 2D supramolecular brick-wall architecture by C-H¨ interactions.