Hydrothermal synthesis and structural characterization of two inorganic-organic composite sandwich-type tungstogermanates

被引：9

作者：

Wang, Jingping ^{[1
]}

Liu, Jiangping ^{[1
]}

Niu, Jingyang ^{[1
]}

机构：

[1] Henan Univ, Sch Chem & Chem Engn, Inst Mol & Crystal Engn, Kaifeng 475004, Peoples R China

来源：

JOURNAL OF COORDINATION CHEMISTRY | 2009年 / 62卷 / 22期

关键词：

Heteropolyoxotungstates; Cobalt; Sandwich-type structure; Hydrothermal synthesis; COORDINATED WATER-MOLECULES; CRYSTAL-STRUCTURE; MAGNETIC-PROPERTIES; POLYOXOMETALATE CLUSTERS; DIMERIC POLYOXOANIONS; RATIONAL SYNTHESIS; NI; CO; CU; COMPLEXES;

D O I：

10.1080/00958970903176879

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

Two new inorganic-organic hybrid polyoxotungstates [enH(2)][C8N4H22](3)H-2[Co-4(enH)(2)(GeW9O34)(2)] center dot 6H(2)O (1) and [Co(en)(3)](2)H-6[Co-4(enH)(2)(GeW9O34)(2)] center dot 14H(2)O (2) (en = ethylene-diamine) have been synthesized by hydrothermal methods and characterized by IR, TG, XRD, XPS, elemental analysis, and single-crystal X-ray analysis. The polyoxoanion frameworks of the two compounds consist of two classical tetra-Co sandwiched polyoxoanions [Co-4(H2O)(2)(GeW9O34)(2)] in which two organic ligands substitute two water molecules. The tetra-Co clusters in 1 and 2 exhibit the familiar structural type of a beta-junction at the sites of metal incorporation. Compound 1 is of interest owing to its C8N4H20 ligands resulting from the reaggregation of triethylenetetramine which occurs under 160 degrees C.

引用

页码：3599 / 3605

页数：7

共 38 条

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