期刊
SOLID STATE SCIENCES
卷 9, 期 2, 页码 155-158出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.solidstatesciences.2006.09.005
关键词
lead(II); 5-sulfoisophethalate; lone pair; coordination polymer; 2,2 '-bipyridine
A new three-dimensional polymeric Pb-II complex, [Pb-3(bpy)(H2O)(5)(sip)(2)](n)center dot 0.5bpy center dot 2H(2)O (bpy = 2,2-bipyridine and sip = 5-sulfoisophethalate), has been synthesized and characterized. Its single-crystal X-ray structure shows three types of Pb2+-ions with coordination numbers of 8 Pb1, 6 Pb2, and 7 Pb3. The Pb1 center with a coordination number of 8 possesses a stereo-chemically 'inactive' electron lone pair, and the coordination sphere is holodirected. However, the arrangement of O- and N-atoms for Pb2 and Pb3 suggests a gap or hole in the coordination geometry around these atoms. The stereo-chemically 'active' electron lone pairs of Pb2 and Pb3 possibly occupy these 'holes', and their coordination spheres are, thus, hemidirected. (c) 2006 Elsevier Masson SAS. All rights reserved.
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