CRYSTAL-STRUCTURE OF A NEW HYDROGEN BISMUTH CHROMATE - HBI3(CRO4)(2)O-3

被引:0
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作者
KODIALAM, S [1 ]
KUMADA, N [1 ]
MACKAY, R [1 ]
SLEIGHT, AW [1 ]
机构
[1] YAMANASHI UNIV, FAC ENGN, KOFU, YAMANASHI 400, JAPAN
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中图分类号
O61 [无机化学];
学科分类号
070301 ; 081704 ;
摘要
The new compound HBi3(CrO4)(2)O-3 has been prepared hydrothermally. The yellow needles crystallize in space group P2(1)/a with a = 5.527(7)Angstrom, b = 12.214(3)Angstrom, c = 14.003(3)Angstrom, beta = 92.95(2)degrees and Z = 4. A single crystal X-ray diffraction structure determination and refinement yields R = 4.1% and Rw = 4.8%. Chromium is present in two crystallographically distinct (CrO4)(2-) groups. Sheets formed from bismuth and oxygen are perpendicular to the c-axis. The chromate groups bridge the sheets. Valence bond calculations indicate that the hydrogens are also in the intersheet region and are shared between two crystallographically distinct oxygen atoms.
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页码:739 / 746
页数:8
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