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首页> 外文期刊>Zeitschrift fur Anorganische und Allgemeine Chemie >M-2(H2O)[mu(10)-C6H2(COO)(4)] (M = Ba2+, Pb2+) - Two Isotypic Three-Dimensional Coordination Polymers with a Layer-like Separation between Anions and Cations
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M-2(H2O)[mu(10)-C6H2(COO)(4)] (M = Ba2+, Pb2+) - Two Isotypic Three-Dimensional Coordination Polymers with a Layer-like Separation between Anions and Cations

机译:M-2(H2O)[mu(10)-C6H2(COO)(4)](M = Ba2 +,Pb2 +)-两种同型的三维配位聚合物,阴离子和阳离子之间呈层状分离

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摘要

Monoclinic single crystals of Ba-2(H2O)[mu(10)-C6H2(COO)(4)] (1) and Pb-2(H2O)[mu(10)-C6H2(COO)(4)] (2) were obtained using the silica gel method [space group C2/c (no. 15), Z = 4; 1: a = 780.89(4), b = 1756.19(8), c = 914.80(5) pm, beta = 114.512(5)degrees; 2: a = 756.70(10), b = 1772.8(2), c = 890.2(2) pm, beta = 113.590(10)degrees]. There are two crystallographically independent M2+ ions (M = Ba, Pb). M(1) is surrounded by eight carboxylate oxygen atoms and one water molecule forming a tricapped trigonal prism. M(2) is coordinated by ten carb-oxylate oxygen atoms in the shape of a tetracapped octahedron. The connection between the M(1) and M(2) polyhedra leads to infinite layers parallel to (010), which are linked by [C6H2(COO)(4)](4-) anions to form a three-dimensional framework. The [C6H2(COO)(4)](4-) anion adopts a mu(10) coordination mode. Compound 1 reveals short Ba-Ba contacts of 426.46(2) pm, whereas the Pb-Pb distance of 411.01(6) pm in 2 is larger than twice the van der Waals radius.
机译:Ba-2(H2O)[mu(10)-C6H2(COO)(4)](1)和Pb-2(H2O)[mu(10)-C6H2(COO)(4)]单斜晶体(2) )是通过硅胶法获得的[空间群C2 / c(编号15),Z = 4; 1:a = 780.89(4),b = 1756.19(8),c = 914.80(5)pm,β= 114.512(5)度; 2:a = 756.70(10),b = 1772.8(2),c = 890.2(2)pm,β= 113.590(10)度]。有两个晶体学独立的M2 +离子(M = Ba,Pb)。 M(1)被八个羧酸氧原子和一个水分子包围,形成一个三棱三角棱镜。 M(2)由十个碳封的氧原子以四封八面体的形式进行配位。 M(1)和M(2)多面体之间的连接导致与(010)平行的无限层,这些无限层由[C6H2(COO)(4)](4-)阴离子链接形成三维框架。 [C6H2(COO)(4)](4-)阴离子采用mu(10)配位模式。化合物1显示出426.46(2)pm的短Ba-Ba接触,而2中的Pb-Pb距离411.01(6)pm大于范德华半径的两倍。

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