化学学报 ›› 1992, Vol. 50 ›› Issue (7): 649-653. 上一篇    下一篇

研究论文

[Cr^IIIFe^IIIM^IIO(CH~3CO~2)~6Py~3]Py(M=Mn,Co,Ni)晶体的合成、结构及电子光谱研究

余秀芬;蒋亚琪   

  1. 中国科学院福州结构化学开放研究实验室;福州大学化学系
  • 发布日期:1992-07-15

Synthesis ,molecular Structure and electronic spectra investigation of [Cr^IIIFe^IIIM^IIO(CH~3CO~2)~6Py~3]Py(M=Mn,Co,Ni)

YU XIUFEN;JIANG YAQI   

  • Published:1992-07-15

本文应用醋酸铬(Ⅱ)在吡啶溶液中置换[Fe~2MO(CH~3CO~2)~6(H~2O)~3]·nH~2O(M=Mn,Co,Ni)中三价铁离子的反应,制备了三个标题化合物.从测定的晶胞参数可以确定它们为异质同晶,进而测定其中[FeCrCoO(CH~3CO~2)~6Py~3]·Py三核物的晶体结构.晶体属三方晶系,a=1.7516,c=1.1027nm,V=2.9297nm^3,Z=3,空间群R32.同时还研究了三个标题化合物吡啶溶液的民电子光谱,应用配位场理论对有关金属离子的d-d跃迁谱带进行归属和配位场参数的计算.

关键词: 晶体结构测定, 吡啶 P, 铁络合物, 钴络合物, 镍络合物, 多核络合物, 锰络合物, 配位场理论, 铬络合物, 乙酸盐

Cr(OAc)2 replaces the Fe(III) of [Fe2MO(OAc)6(H2O)3].nH2O. Their crystals are isomorphous according to the obtained cell parameters. The crystal structure of [FeCrCoO(OAc)6py3].py was determine trigonal, space group R32, a 1.7516, c 1.1027 nm, Z = 3, R = 0.040, Rw = 0.053. The electronic spectra [CrFeMO(OAc)6py3] in pyridine solvate were investigated. The d-d transition bands of the corresponding metal ions were assigned, and their ligand field parameters were calculated with ligand field theory.

Key words: CRYSTAL STRUCTURE DETERMINATION, PYRIDINE P, IRON COMPLEX, COBALT COMPLEX, NICKEL COMPLEX, POLYNUCLEAR COMPLEX, MANGANESE COMPLEX, LIGAND FIELD THEORY, CHROMIUM COMPLEX, ACETATE

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