Sonochemical synthesis and characterization of a nano-sized Manganese (II) coordination polymer, [{Mn(NCS)2(4,4´-bipy)(H2O)2}(4,4´-bipy)]n; with 4,4'-Bipyridine (4,4'-bipy) ligand

A novel nano – sized  manganese (II) coordination polymer, [{Mn(NCS)2(L)(H2O)2}(L)]n  , (1) (L- = 4,4'-Bipyridine), have been synthesized by a sonochemical process and characterized by scanning electron microscopy (SEM), X-ray diffraction (XRD), IR spectroscopy and elemental analysis.  Direct calcination of the single crystals and nano-sized compound 1 at 400 0C under air atmosphere yields mixture of K2Mn2 (SO4)3, MnOS and Mn3O4 nanoparticles. Results show that the size and morphology of the K2Mn2 (SO4)3, MnOS, Mn3O4 nanoparticles depend on the particles size of compound 1. Decrease in the particles size of compound 1 leads to decrease in the particles size of the K2Mn2 (SO4)3, MnOS and Mn3O4.