CRYSTAL-STRUCTURE OF A POLYMERIC COMPLEX OF LEAD(II) WITH 2,6-DIHYDROXYBENZOIC ACID

被引:43
作者
GLOWIAK, T
KOZLOWSKI, H
ERRE, LS
MICERA, G [1 ]
GULINATI, B
机构
[1] UNIV SASSARI,DEPT CHEM,I-07100 SASSARI,ITALY
[2] WROCLAW UNIV,INST CHEM,PL-50383 WROCLAW,POLAND
[3] CNR,IST APPL TECN CHIM AVANZATE PROBLEMI AGROBIOL,I-07100 SASSARI,ITALY
关键词
D O I
10.1016/S0020-1693(00)85348-7
中图分类号
O61 [无机化学];
学科分类号
070301 ; 081704 ;
摘要
The complex Pb2(DHB)4 . 3H2O (DHB = 2,6-dihydroxybenzoate(- 1)) has been prepared and characterized using single-crystal X-ray diffraction. The compound consists of a polymeric network which accommodates two types of lead ions. The coordination polyhedron around the first of them can be described as a distorted pentagonal bipyramid, where four carboxylate and one phenolic oxygens are the basal coordinating atoms, while the water molecule and a second phenolic group are in the apical positions. The second lead atom is involved in a dimeric Pb-Pb unit (metal-metal distance: 4.23 angstrom) bridged by two water molecules lying at distances of 2.59 and 2.61 angstrom, respectively. The coordination at each atom of this dimeric entity is completed by a bidentate carboxylate, a monodentate carboxylate, a water molecule and two phenolic groups resulting in a heavily distorted square antiprismatic stereochemistry. The Cd(II) complex is likely to have the same structure as the lead complex.
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页码:43 / 48
页数:6
相关论文
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