Synthesis and Crystal Structure of {(NH4)xCo((3-x)/2)}(H2O)2[BP2O8] • (1-x) H2O (x ≈ 0.5)

被引：0
|
作者：
Schäfer, G [1 ]
Carrillo-Cabrera, W [1 ]
Schnelle, W [1 ]
Borrmann, H [1 ]
Kniep, R [1 ]
机构：
[1] Max Planck Inst Chem Phys Stoffe, D-01187 Dresden, Germany
来源：
ZEITSCHRIFT FUR ANORGANISCHE UND ALLGEMEINE CHEMIE | 2002年 / 628卷 / 01期
关键词：
boron; phosphorus; borophosphate; helical structures;
D O I：
10.1002/1521-3749(200201)628:1<289::AID-ZAAC289>3.0.CO;2-H
中图分类号：
O61 [无机化学];
学科分类号：
070301 ; 081704 ;
摘要：
A borophosphate hydrate with general composition {(NH4)(x)Co((3-x)/2)}(H2O)(2)[BP2O8].(1-x) H2O (xapproximate to0.5) was prepared under mild hydrothermal conditions (T=170degreesC). The crystal structure of the purple title compound was refined in space group P6(5) (no. 170) as a meroihedric twin (a=949.14 pm, c=1558.25 pm, R-1=0.037, wR(2)=0.092 for all data). According to preliminary X-ray investigations, vis-spectra, and magnetic susceptibility measurements, a second blue coloured variant exhibits a superstructure of the title compound with a change in coordination numbers around cobalt from six and five to six and four. Both phases show reversible de-/rehydration properties.
引用
收藏
页码：289 / 294
页数：6
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