Crystal structure and magnetic properties of (2,2′-dipyridyl)-(2-acetylphenolato)copper(II) perchlorate

被引:6
|
作者
Elmali, A [1 ]
Elerman, Y
Svoboda, I
机构
[1] Ankara Univ, Fac Engn, Dept Engn Phys, TR-06100 Ankara, Turkey
[2] Tech Univ Darmstadt, Inst Sci Mat, D-64287 Darmstadt, Germany
来源
ZEITSCHRIFT FUR NATURFORSCHUNG SECTION B-A JOURNAL OF CHEMICAL SCIENCES | 2002年 / 57卷 / 10期
关键词
mixed-ligand binuclear copper(II) complex; crystal structure; antiferromagnetic interaction;
D O I
10.1515/znb-2002-1009
中图分类号
O61 [无机化学];
学科分类号
070301 ; 081704 ;
摘要
The mixed-ligand dinuclear complex (2,2'-dipyridyl)-(2-acetylphenolato)copper(II) perchlorate was synthesized and its crystal structures determined. The structure consists of a dimeric unit involving a planar Cu2O2 group. The coordination sphere of the Cu atom can be described as an alongated octahedron where the basal plane is formed by the two N atoms of the 2,2'-dipyridyl molecule and the two O atoms of the acetophenon anion. Two apical Cu - O contacts complete the 4+2 coordination of the Cu atoms. They correspond to one of the O atoms of the perchlorate anion and to the O atom of the second unit. Magnetic susceptibility data obey the Curie-Weiss law with circle minus = -8.1(2) K. The decreasing of the effective magnetic moment from 1.94(8) mu(B) at 300 K to 1.86(8) mu(B) at 70 K and the negative Weiss constant indicate weak antiferromagnetic interactions between the two copper atoms in the dimeric units.
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页码:1129 / 1132
页数:4
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