Showing papers by "Milan Melnik published in 2015"

Organomonophosphines in PtP2S2 derivatives: structural aspects

Abstract: Abstract In this review, the structural parameters of almost 130 monomeric Pt(II) coordination complexes with the inner coordination sphere of PtP2S2 in which P-donor ligands are only monodentate organomonophosphines are summarized and analyzed. These complexes crystallized in three crystal systems: orthorhombic (×14)

Synthesis, crystal structure, and spectroscopic and thermal properties of the polymeric compound catena-poly[[bis(2,4-dichlorobenzoato)zinc(II)]-μ-isonicotinamide].

Abstract: Zinc(II) carboxyl­ates with O-, S- and N-donor ligands are inter­esting for their structural features, as well as for their anti­bacterial and anti­fungal activities. The one-dimensional zinc(II) coordination complex catena-poly[[bis­(2,4-di­chloro­benzoato-κO)zinc(II)]-μ-isonicotinamide-κ2N1:O], [Zn(C7H3Cl2O2)2(C6H6N2O)]n, has been prepared and characterized by IR spectroscopy, single-crystal X-ray analysis and thermal analysis. The tetra­hedral ZnO3N coordination about the ZnII cation is built up by the N atom of the pyridine ring, an O atom of the carbonyl group of the isonicotinamide ligand and two O atoms of two di­chloro­benzoate ligands. Isonicotinamide serves as a bridge between tetra­hedra, with a Zn⋯Zn distance of 8.8161 (7) A. Additionally, π–π inter­actions between the planar benzene rings contribute to the stabilization of the extended structure. The structure is also stabilized by inter­molecular hydrogen bonds between the amino and carboxyl­ate groups of the ligands, forming a two-dimensional network. During thermal decomposition of the complex, isonicotinamide, di­chloro­benzene and carbon dioxide were evolved. The final solid product of the thermal decomposition heated up to 1173 K was metallic zinc.