One complex with a zwitterionic dicarboxylate ligand, [Mn(L)(N3)]n 1 (L = 1-car- boxymethylpyridinium-3-carboxylate), was synthesized and structurally characterized. Complex 1 crystallizes in triclinic, space gr...One complex with a zwitterionic dicarboxylate ligand, [Mn(L)(N3)]n 1 (L = 1-car- boxymethylpyridinium-3-carboxylate), was synthesized and structurally characterized. Complex 1 crystallizes in triclinic, space group P1 with a = 7.570(2), b = 7.808(2), c = 9.232(3) A, β= 94.450(19)°, V= 489.0(3) A3, Z = 2, Mr = 277.11, Dc = 1.882 g/cm3, F(000) = 278,μ = 1.359 mm-1, S = 1.021, the final R = 0.0509 and wR = 0.1149 for 2236 observed reflections with 1 〉 2σ(I). Complex 1 consists of two-dimensional coordination layers in which the anionic uniform chains with mixed triple bridges (one end-on (EO) azide and two syn-syn carboxylates) are cross-linked by the flexible cationic N-methylpyridinium spacers. Magnetic studies demonstrated that the triple bridge in 1 transmits antiferromagnetic coupling between the Mn(Ⅱ) ions.展开更多
基金Supported by the NNSFC(21301087)Programs of Higher-level talents of Inner Mongolia University(SPH-IMU-30105-125135)Inner Mongolia autonomous region natural science fund project(2013MS0206)
文摘One complex with a zwitterionic dicarboxylate ligand, [Mn(L)(N3)]n 1 (L = 1-car- boxymethylpyridinium-3-carboxylate), was synthesized and structurally characterized. Complex 1 crystallizes in triclinic, space group P1 with a = 7.570(2), b = 7.808(2), c = 9.232(3) A, β= 94.450(19)°, V= 489.0(3) A3, Z = 2, Mr = 277.11, Dc = 1.882 g/cm3, F(000) = 278,μ = 1.359 mm-1, S = 1.021, the final R = 0.0509 and wR = 0.1149 for 2236 observed reflections with 1 〉 2σ(I). Complex 1 consists of two-dimensional coordination layers in which the anionic uniform chains with mixed triple bridges (one end-on (EO) azide and two syn-syn carboxylates) are cross-linked by the flexible cationic N-methylpyridinium spacers. Magnetic studies demonstrated that the triple bridge in 1 transmits antiferromagnetic coupling between the Mn(Ⅱ) ions.