含O_3MoS_3单元的配合物[Mo_x(CO)_y(O,S—C_6H_4—1,2)_3Fe_zL_m]^(n-)(x=1,2或3,y=0,3,7或4,z=0或1,L=Cl,m=0,2,n=1或2)的红外光谱及其与结构的关系研究  

Studies on the Infrared Spectra of Clusters Containing O_3MoS_3,[Mo_x(CO)_y(O,S—C_6H_4—1,2)_3Fe_zL_m]^(n-) (x=1,2 or 3,y=0,3,7 or 4,z=0 or 1,L=Cl,m=0,2,n=1 or 2) Unit and the Relationship between the Spectra and Their Structures

作　　者：何玲洁[1] 庄伯涛[1] 蔡素华[1] 陈波[1] 兰安建[1] 周文波[1] 张琳娜[1] 

机构地区：[1]中国科学院福建物质结构研究所,福州350002

出　　处：《光谱学与光谱分析》2000年第6期788-789,共2页Spectroscopy and Spectral Analysis

基　　金：国家自然科学基金资助项目

摘　　要：用红外光谱研究标题配合物的结构 ,得到了很有意义的结果。The IR spectra of clusters containing O 3MoS 3 Unit,(Et 4N)[Mo(O,S—C 6H 4 1,2) 3](1),(Et 4N) 2[Mo 2(CO) 3(O,S—C 6H 4 1,2) 3](2),(Et 4N) 2[Mo 3(CO) 7(O,S—C 6H 4 1,2) 3](3) and (Et 4N) 2[Mo 2(CO) 4(O,S—C 6H 4 1,2) 3FeCl 2](4) have been investigated.The characteristic frequencies, ν (Mo n+ —O tR)(n=4,5), ν (Mo n+ —O bR)(n=0,4), ν (Mo n+ -S tR)(n=4,5), ν (Mo n+ —S bR)(n=0,1,4), ν (C=O), ν (Mo n+ —C)(n=0,1), δ (Mo n+ —C—O)(n=0,1), ν (Fe 2+ —O bR) and ν (Fe 2+ —Cl) were assigned by comparing the vibrational frequencies and structure parameters of them with that of Mo—Fe—S clusters.The influences of σ donor abilities of ligands L(—OR,—SR) on ν (Mo—C) and ν (C=O) and the effect of Mo n+ →Mo 4+ (n=0,1) charge transfer on ν (Mo 4+ —O bR), ν (Mo n+ —C) and ν (C=O) have been discussed.A partial oxidation of cluster 4 to [Mo 2(CO) 3(O,S—C 6H 4 1,2) 3] -(5) have been inferred according to the information from the changes of IR spectra of cluster 4 in air with time and the existence of cluster 5 was also verified by NFAB MS of cluster 4.

关 键 词：红外光谱 配合物 电荷迁移 O3MoS3 结构 

分 类 号：O641.4[理学—物理化学]