本文合成了7,8,17,18-四溴-5,10,15,20-四苯基-21,23(H)-卟啉(H_2TPPBr_4)及其金属配合物MTPPBr_4[M=Cu(Ⅱ),Ni(Ⅱ),Co(Ⅱ)和Zn(Ⅱ)],测定了它们的可见紫外光谱和循环伏安,用四轨道模型(Four Orbital Model)计算了MTPPBr_4的相对前线轨...本文合成了7,8,17,18-四溴-5,10,15,20-四苯基-21,23(H)-卟啉(H_2TPPBr_4)及其金属配合物MTPPBr_4[M=Cu(Ⅱ),Ni(Ⅱ),Co(Ⅱ)和Zn(Ⅱ)],测定了它们的可见紫外光谱和循环伏安,用四轨道模型(Four Orbital Model)计算了MTPPBr_4的相对前线轨道,并解释了配合物的可见紫外光谱及电化学性质.测定了NiTPPBr_4的晶体结构,晶体属单斜晶系,空间群为C2/c,a=2.6077(7),b=1.0414(4),c=1.9312(3)nm,β=137.1(7)°,Z=4,最后偏离因子R=0.067,晶体结构直接证明了卟啉亲电溴化反应具有区域选择性,四个溴分布在相对两个吡咯环上.展开更多
A new large conjugated ligand 1′,8′-diaza-anthreceno-\-1,10-phenanthroline(dap) and its Fe(Ⅱ) complex have been synthesized from phenanthroline and 2,3-diaminonphthalene. The structures and properties of the ligand...A new large conjugated ligand 1′,8′-diaza-anthreceno-\-1,10-phenanthroline(dap) and its Fe(Ⅱ) complex have been synthesized from phenanthroline and 2,3-diaminonphthalene. The structures and properties of the ligand and the complex were characterized by elemental analysis, IR, MS, UV-vis spectrometry. The study of magnetic susceptibility of the complex indicated the complex lies mainly in low spin state between 80～300 K, while a spin crossover occurs in high temperature region as a result of the stronger ligand field of this ligand than those of dipyrido\[3,2-a:2′phenazine and dipyrazine\,3′h\]quinoxaline.展开更多
文摘本文合成了7,8,17,18-四溴-5,10,15,20-四苯基-21,23(H)-卟啉(H_2TPPBr_4)及其金属配合物MTPPBr_4[M=Cu(Ⅱ),Ni(Ⅱ),Co(Ⅱ)和Zn(Ⅱ)],测定了它们的可见紫外光谱和循环伏安,用四轨道模型(Four Orbital Model)计算了MTPPBr_4的相对前线轨道,并解释了配合物的可见紫外光谱及电化学性质.测定了NiTPPBr_4的晶体结构,晶体属单斜晶系,空间群为C2/c,a=2.6077(7),b=1.0414(4),c=1.9312(3)nm,β=137.1(7)°,Z=4,最后偏离因子R=0.067,晶体结构直接证明了卟啉亲电溴化反应具有区域选择性,四个溴分布在相对两个吡咯环上.
文摘A new large conjugated ligand 1′,8′-diaza-anthreceno-\-1,10-phenanthroline(dap) and its Fe(Ⅱ) complex have been synthesized from phenanthroline and 2,3-diaminonphthalene. The structures and properties of the ligand and the complex were characterized by elemental analysis, IR, MS, UV-vis spectrometry. The study of magnetic susceptibility of the complex indicated the complex lies mainly in low spin state between 80～300 K, while a spin crossover occurs in high temperature region as a result of the stronger ligand field of this ligand than those of dipyrido\[3,2-a:2′phenazine and dipyrazine\,3′h\]quinoxaline.
