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CRYSTAL-STRUCTURES AND MAGNETIC-PROPERTIES OF BIPYRIDINE COPPER(II) COMPLEXES

被引：14
作者：
ATRIA, AM
BAGGIO, R
GARLAND, MT
GONZALEZ, O
MANZUR, J
PENA, O
SPODINE, E
机构：
[1] CEA,BUENOS AIRES,DF,ARGENTINA
[2] UNIV CHILE,FAC CIENCIAS FIS & MATEMAT,SANTIAGO,CHILE
[3] UNIV RENNES 1,CHIM SOLIDE & INORGAN MOLEC LAB,CNRS,URA 1495,F-35042 RENNES,FRANCE
来源：
JOURNAL OF CRYSTALLOGRAPHIC AND SPECTROSCOPIC RESEARCH | 1993年 / 23卷 / 12期
关键词：
D O I：
10.1007/BF01185541
中图分类号：
O7 [晶体学];
学科分类号：
0702 ; 070205 ; 0703 ; 080501 ;
摘要：
The synthesis, structure and magnetic properties of [Cu(diMe-bipy)Br-2] are reported (diMe-bipy=4,4'-dimethyl 2,2'-bipyridine). The complex has a polymeric structure composed of [Cu(diMe-bipy)Br-2] subunits linked via bridging bromine atoms. Each copper atom is hexacoordinated in a distorted octahedral coordination environment. Clystallographic data: monoclinic, space group C2/c, Z=4, unit cell of dimensions a=18.312(7), b=9.818(2), c=7.486(2)Angstrom, beta=107.750(0)degrees at 293 K. The best fit of the magnetic susceptibility data by the uniform Heisenberg chain model for S=1/2 ions yields values for the exchange coupling constant of -0.46 cm(-1) The magnetic susceptibility of the dimeric [Cu(diMe-bipy) Cl-2](2).0.5H(2)O exhibits a maximum near 12 K that is indicative of an antiferromagnetic interaction between the two metal centers. The best fit of the experimental data by the Bleaney-Bowers equation was obtained with g=1.95 and J=-6.99 cm(-1).
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页码：943 / 947
页数：5
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