A new 1D coordination polymer [Co(bpp)3Cl2(H2O)2]n 1 (bpp = 1,3-bis(4-pyridyl)-propane) was synthesized and characterized by elemental analysis,IR spectrum and single-crystal X-ray diffraction. The crystal belongs to the orthorhombic system,space group Ibca with a = 16.569(9),b = 17.240(10),c = 27.087(16) ,V = 7738(8) 3,Z = 8,Dc = 1.306 g/cm3,Mr = 760.65,λ(MoKa) = 0.71073 ,μ = 0.623 mm1,F(000) = 3192,the final R = 0.0678 and wR = 0.2011. The Co(II) atom is coordinated in a slightly distorted octahedral CoN4Cl2 geometry by two Cl atoms in the axial positions,four N atoms from the two bridging bpp ligands and two pendant bpp ligands. The CoN4Cl2 octahedra are connected by the bridging bpp ligands to form a 1D neutral coordination polymer chain. The chains are linked by face-to-face π-π interactions between adjacent pendant bpp ligands to give rise to a 3D supramolecular architecture. The photoluminescent investigation indicates that the emission of 1 is attributed to ligand-centered emission. The variable-temperature magnetic susceptibility measurement shows weak antiferromagnetic behavior in the complex.
A new mononuclear Cu(Ⅱ) dithiocarbamate complex CuI(prdtc)(phen) 1(prdtc = N-pyrrolidinyldithiocarbamate,phen = 1,10-phenanthroline) was synthesized and characterized by elemental analysis,IR spectrum,and single-crystal X-ray diffraction.The crystal belongs to the monoclinic system,space group P21/c with a = 8.7110(9),b = 14.7143(14),c = 14.8507(15) ,β = 109.721(6)o,V = 1791.9(3) 3,Z = 4,Dc = 1.916 g/cm3,C17H16CuIN3S2,Mr = 516.89,λ(MoKa) = 0.71073 ,μ = 3.178 mm-1,F(000) = 1012,the final R = 0.0369 and wR = 0.0987.A total of 4082 unique reflections were collected,of which 2916 with I > 2σ(I) were observed.The Cu(Ⅱ) atom is five-coordinated in a distorted square-pyramidal geometry by one I atom in the apical position,two S atoms from a prdtc ligand and two N atoms from a phen ligand in the basal plane.There exist face-to-face aromatic π-π stacking interactions between adjacent phen ligands stabilizing the structure and making the complex assemble into a 1D structure along the a axis.It can be concluded that the difference of the dtc flexibility and reaction conditions result in the structural difference between complex 1 and CuI(dmdtc)(phen)(dmdtc = N,N-dimethyldithiocarbamate).
A novel photocatalytic material (Pt,Cd0.8Zn0.2S)/HLaNb2O7 was fabricated by successive intercalation and exchange reactions. The (Pt,Cd0.8Zn0.2S)/HLaNb2O7 possessed a gallery height less than 0.5 nm and showed a broad absorption with wavelength over 370―500 nm. Using (Pt,Cd0.8Zn0.2S)/HLaNb2O7 as catalyst, the photocatalytic H2 evolution was more than 160 cm3·h-1·g-1 in the presence of Na2S as a sacrificial agent under irradiation with wavelength more than 290 nm from a 100-W mercury lamp. Furthermore, the catalyst showed photocatalytic activity even under visible light irradiation.
WU JiHuai1,CHENG YingHan1, LIN JianMing1, HUANG YunFang1, HUANG MiaoLiang1, LI YiBin1, YIN Shu2 & SATO Tsugio2 1 The Key Laboratory for College of Materials Science and Engineering, Huaqiao University of Fujian Higher Education, Institute of Materials Physical Chemistry, Huaqiao University, Quanzhou 362011, China
