SYNTHESIS, SPECTROSCOPY AND X-RAY STRUCTURE OF HEXAKIS(MU-3-METHYL-4-ETHYL-1,2,4-TRIAZOLO-N-1,N-2)TETRAAQUATRICOPPER(II) HEXAKIS(TRIFLUOROMETHYLSULFONATE)

被引:42
作者
VREUGDENHIL, W
HAASNOOT, JG
REEDIJK, J
WOOD, JS
机构
[1] LEIDEN STATE UNIV,GORLAEUS LABS,POB 9502,2300 RA LEIDEN,NETHERLANDS
[2] UNIV MASSACHUSETTS,DEPT CHEM,AMHERST,MA 01003
关键词
D O I
10.1016/S0020-1693(00)83943-2
中图分类号
O61 [无机化学];
学科分类号
070301 ; 081704 ;
摘要
The synthesis, characterization and X-ray structure determination of [Cu3(metz)6(H2O)4] (CF3SO3)6(H2O)4 is described. The compound crystallizes in the space group R3, with a = b = 14.075(3) and c = 34.655(8) Å. The complex cation consists of linear trinuclear clusters positioned on the crystallographic three-fold axis, and in which the Cu atoms are bridged by triple N1,N2-coordinating triazole ligands. The terminal copper atoms are in addition coordinated by two water molecules, and thus have a distorted tetragonal pyramidal geometry. The central copper ion is located at a three-fold inversion center and thus should exhibit dynamic Jahn-Teller behaviour. In the crystal one observes the average of three such trimers related by the three-fold axis, and due to this disorder and also to that in the triflate anions, the structure could be refined only to R = 0.17 (Rw = 0.20). The infrared and ligand-field spectroscopic data and magnetic susceptibility are in agreement with the observed structure. © 1990.
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页码:109 / 113
页数:5
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