Higher dimensional networks of Mn(II) azide/cyanate using flexible N-donor ligands: Synthesis, crystal structure and magnetic properties

Abstract

Three polymeric Mn(II) complexes, {[Mn(N 3) 2(bpds) 2](bpds)} n ( 1), {[Mn(N 3) 2(bpp) 3](H 2O)} n ( 2) and [Mn(OCN) 2(bpp) 2] n ( 3) [bpds=4,4′-bipyridyl disulfide, bpp=1,3-bis(4-pyridyl)propane] have been synthesized and characterized by single crystal X-ray analysis. Complexes 1 and 2 are 1D coordination polymers, which are extended through weak interactions to 2D sheet in case of 1 and 3D in case of 2. Complex 2 exhibits twofold parallel interpenetrating nets through the formation of H-bonds created by lattice water molecules. The crystal structure of complex 3 shows twofold parallel interpenetrating layers based on a 4,4 topology. The variable temperature magnetic study exhibits weak antiferromagnetic interactions between the metal centers in all the complexes.