Novel three-dimensional cage assembly of a μ4-carbonato-bridged cobalt(II) compound [Co2(bpm)(H2O)2(CO3)(OH)]NO3•4H2O

被引:41
作者
Armentano, D
De Munno, G [1 ]
Lloret, F
Julve, M
机构
[1] Univ Calabria, Dipartimento Chim, I-87030 Arcavacata Di Rende, Cosenza, Italy
[2] Univ Valencia, Fac Quim, Dept Quim Inorgan, Burjassot 46100, Valencia, Spain
关键词
D O I
10.1021/ic981323n
中图分类号
O61 [无机化学];
学科分类号
070301 ; 081704 ;
摘要
The new three-dimensional cobalt(II) complex of formula [Co-2(bpm)(H2O)(2)(CO3)(OH)]NO3. 4H(2)O (1) is obtained from aqueous solutions containing cobalt(II) nitrate hexahydrate, 2,2'-bipyrimidine (bpm), and potassium bicarbonate. The cobalt atoms are bridged by bischelating bpm, single mu(2)-hydroxide, and mu(4)-carbonate groups. Uncoordinated nitrate anions and crystallization water molecules occupy the prismatic holes of the three-dimensional cationic skeleton, and they are held by hydrogen bonds with the hydroxo groups and coordinated water molecules. Variable-temperature magnetic susceptibility measurements reveal the occurrence of an overall antiferromagnetic behavior with a maximum of the susceptibility at 11.5 K.
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页码:3744 / +
页数:5
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