论文部分内容阅读
Solvothermal reaction of aromatic terphenyl-2,5,2’,5’-tetracarboxylic acid (H 4 qptc) ligand and the transitional metal cation of Mn II in the presence of 3-(2-pyridyl)pyrazole (pp) affords one new coordination polymer, [Mn(qptc)0.5(pp)2]n·n(H2O) (1). The structure has been determined by single-crystal X-ray diffraction analyses and further characterized by elemental analyses, IR, TGA, and magnetism. The carboxyl groups of qptc 4-exhibit a μ1-η1 :η 0 coordination mode, and the qptc4- acts as a H-shaped ligand linking the Mn Ⅱ centers together to form a 2D polymeric [Mn(qptc) 0.5 ] n layer. The crystal of 1 crystallizes in orthorhombic, space group Pbca with a=9.3119(12), b=20.848(3), c=26.134(3) , V=5073.4(11) 3 , Z=8, C27H19MnN6O5 , Mr=562.42, Dc=1.473 g/cm3 , F(000)=2304 and μ(MoKα)=0.571 mm-1 . The final R=0.0468 and wR=0.1196 for 4429 observed reflections with I > 2σ(I) and R=0.0797 and wR=0.1383 for all data.
Solvothermal reaction of aromatic terphenyl-2,5,2 ’, 5’-tetracarboxylic acid (H 4 qptc) ligand and the transitional metal cation of Mn II in the presence of 3- (2-pyridyl) pyrazole (pp) affords one new coordination polymer, [Mn (qptc) 0.5 (pp) 2] n · n (H2O) (1). The structure has been determined by single-crystal X-ray analysis and also characterized by elemental analyzes, IR, TGA, and magnetism. The carboxyl groups of qptc 4-exhibit a μ1-η1: η 0 coordination mode, and the qptc4-acts as an H-shaped ligand linking the Mn Ⅱ centers together to form a 2D polymeric [Mn (qptc) 0.5] n The crystal of 1 crystallizes in orthorhombic space group Pbca with a = 9.3119 (12), b = 20.848 (3), c = 26.134 (3) , V = 5073.4 (11) 3, Z = 8, C27H19MnN6O5 , Mr = 562.42, Dc = 1.473 g / cm3, F (000) = 2304 and μ (MoKα) = 0.571 mm-1. The final R = 0.0468 and wR = 0.1196 for 4429 observed reflections with I> 2σ (I) and R = 0.0797 and wR = 0.1383 for all data.