[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  

Synthesis, Molecular Structure and Electronic Spectra Investigation of[Cr~ⅢFe~ⅢM~ⅡO(CH_3CO_2)_6Py_3]·Py(M=Mn,Co, Ni)

作　　者：余秀芬[1] 蒋亚琪[1] 

机构地区：[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,福州350002

出　　处：《化学学报》1992年第7期649-653,共5页Acta Chimica Sinica

基　　金：国家自然科学基金资助项目

摘　　要：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.In present paper, three title compounds are prepared by the reaction that chromium (II) acetate replaoe the iron (III) ion of [Fe_2MO(CH_3CO_2)_6(H_2O)_3] ·nH_2O(M=Mn, Co, Ni). Their crystals are isomorphous according to the cell parameters we obtained. So, we determined the orystal structure of [FeCrCoO(CH_3CO_2)_6 Py_3]·Py, it crystallizes in trigonal system with a=1.7516, c=1.1027nm, V=2.9297nm3~, Z=3, space group R32. Moreover, the electronic spectra of the three title compounds in pyridine solvate are investigated. The d-d transition bands of the corresponding metal ions are assigned and their ligand-field parameters are calculated with the ligand-field theory.

关 键 词：晶体结构 电子光谱 CrFeM 

分 类 号：O614.611[理学—无机化学]