[NH4][(CH3)2NH2]2[Ta(C2O4)4]•2H2O: the first (oxalato) tantalate(V) complex structurally characterized

被引：8
|
作者：
Peric, Berislav [1 ]
Brnicevic, Nevenka [1 ]
Juric, Marijana [1 ]
Planinic, Pavica [1 ]
Matkovic-Calogovic, Dubravka [2 ]
机构：
[1] Rudjer Boskovic Inst, Zagreb 10000, Croatia
[2] Univ Zagreb, Fac Sci, Dept Chem, Zagreb 10000, Croatia
来源：
STRUCTURAL CHEMISTRY | 2009年 / 20卷 / 05期
关键词：
Tetra(oxalato)tantalate(V)complex; Crystal structure; Octacoordination; IR spectroscopy; Thermal analysis; CRYSTAL-STRUCTURE; OPEN-FRAMEWORK; THERMAL-BEHAVIOR; DISCRETE; 8-COORDINATION; HYDROTHERMAL SYNTHESIS; COORDINATION POLYMERS; ZEOLITIC PROPERTIES; BUILDING UNITS; STEREOCHEMISTRY; ARCHITECTURES;
D O I：
10.1007/s11224-009-9494-0
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
The compound [NH4][(CH3)(2)NH2](2)[Ta(C2O4)(4)]center dot 2H(2)O has been synthesized and characterized by elemental and TG/DTA analyses, IR spectroscopy and by the single-crystal X-ray diffraction study. The structure comprises the [Ta(C2O4)(4)](3-) anion, NH4+ and [(CH3)(2)NH2](+) cations and crystallization water molecules. The Ta atom is octacoordinated by oxygen atoms from four bidentate oxalate groups forming a coordination polyhedron close to the triangular dodecahedron. The charge-assisted hydrogen bonds from both cations connect the [Ta(C2O4)(4)](3-) anions into a three-dimensional framework.
引用
收藏
页码：933 / 941
页数：9
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