Four solid complexes of Ln(Me2dtc)3(phen) (Ln=Eu, Gd, Tb, Dy) were synthesized in anhydrous ethanol by the reaction of lanthanide chloride low hydrate with the mixed ligands of sodium dimethyldithiocarbamate and 1, 10-phenanthroline·H2O (abbreviated as phen·H2O), and characterized by elemental analysis, IR spectroscopy, TG-DTG and X-ray diffraction techniques. Combining with the crystal structures, the complexes are identified as the general formula of Ln(Me2dtc)3(phen). TG-DTG with X-ray powder diffraction showed that these compounds could decompose to lanthanide sulfides under relatively lower temperature, which indicated that the title complexes could be ideal precursors to prepare lanthanide sulfides.
Utilizing mononuclear complex Ni(2-mpac)2(H2O)2 as the molecular building block,a novel coordination polymer [Ni2(2-mpac)4(4,4'-bpy)·2H2O]n(1,2-mpac = 5-methyl-2-pyrazinecar-boxylic acid,4,4'-bpy = 4,4'-bipyridine) was successfully synthesized and structurally characterized by X-ray single-crystal diffraction method.Crystal data:monoclinic,space group C2/c,a = 23.870(1),b = 9.887(4),c = 18.929(9) ,β = 126.840(5)°,V = 3575(3) 3,Z = 4,S = 1.046,μ = 1.594 mm-1,F(000) = 1768 and Dc = 1.127 g·cm-3.The final R = 0.0351 and wR = 0.0792 for 2372 observed reflections with Ⅰ > 2σ(Ⅰ) and R = 0.0564 and wR = 0.0938 for all reflections.
