Crystal Structure of New Zinc-Hydroxy-Sulfate-Hydrate Zn4(OH)6SO4<middle dot>2-2.25H2O

被引:0
|
作者
Stanimirova, Tsveta [1 ]
Nikolova, Rositsa [2 ]
Petrova, Nadia [2 ]
机构
[1] Sofia Univ St Kliment Ohridski, Fac Geol & Geog, Dept Mineral Petrol & Econ Geol, 15 Tzar Osvoboditel Blvd, Sofia 1000, Bulgaria
[2] Bulgarian Acad Sci, Inst Mineral & Crystallog, 107 Acad G Bonchev Str, Sofia 1113, Bulgaria
关键词
crystal structure; new Zn-hydroxy sulfate; mixed-layer structure; GORDAITE; MINE; NAMUWITE; EXCHANGE; PHASE; ZN;
D O I
10.3390/cryst14020183
中图分类号
O7 [晶体学];
学科分类号
0702 ; 070205 ; 0703 ; 080501 ;
摘要
A theoretical model of the crystal structure of the newly obtained compound Zn-4(OH)6SO4<middle dot>2- 2.25H(2)O based on the compilation of the crystal-chemical properties of two known zinc-hydroxy-sulfate phases-mineral namuwite and hemihydrate-is proposed. The single XRD data confirmed the model and determined the structure, with a trigonal symmetry SG of P-3, the unit cell with a = 8.3418(15) & Aring; and c = 17.595(7) & Aring;, and a cell volume of 1060.3(6) & Aring;(3), with Z = 2. The results show that the Zn-4(OH)(6)SO4<middle dot>2- 2.5H(2)O crystal structure consists of an alternating paired octahedral-tetrahedral doubly decorated hydroxide layer with cationic vacancies and an aqueous interlayer.
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页数:13
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