A lanthanum(III) complex with a lacunary polyoxotungstate:: Na2(NH4)7[La(W5O18)2]•16H2O

被引：5
|
作者：
Paz, FAA [1 ]
Balula, MSS
Cavaleiro, AMV
Klinowski, J
Nogueira, HIS
机构：
[1] Univ Aveiro, Dept Chem, CICECO, P-3810193 Aveiro, Portugal
[2] Univ Cambridge, Dept Chem, Cambridge CB2 1EW, England
来源：
ACTA CRYSTALLOGRAPHICA SECTION E-CRYSTALLOGRAPHIC COMMUNICATIONS | 2005年 / 61卷
关键词：
D O I：
10.1107/s1600536805003557
中图分类号：
O7 [晶体学];
学科分类号：
0702 ; 070205 ; 0703 ; 080501 ;
摘要：
The crystal structure of a lanthanum polyoxotungstate complex, viz. heptaammonium disodium decatungstolanthanate hexadecahydrate, Na-2(NH4)(7)[La5O(18))(2)].16H(2)O, has been determined by single-crystal X-ray diffraction at 100 (2) K in the space group C2/c. The [La(W5O18)(2)](9-) polyoxoanion has the central La3+ cation located on a twofold rotation axis. The close packing of the polyoxoanion-supported lanthanum(III) complexes with Na+ and NH4+ cations leads to the formation of several intersecting undulating channels, where the water molecules of crystallization are located and involved in strong hydrogen bonds.
引用
收藏
页码：I28 / I31
页数：4
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