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摘要:
A new calcium borate, CaB6O10, has been prepared by solid-state reactions at temperature below 750 degrees C. The single-crystal X-ray structural analysis showed that CaB6O10 crystallizes in the monoclinic space group P2(l/c) with a=9.799(1)angstrom, b=8.705(1)angstrom, c=9.067(1)angstrom, beta=116.65(1)degrees, Z=4. It represents a new structure type in which two [B3O7](5-) triborate groups are bridged by one oxygen atom to form a [B6O13](8-) group that is further condensed into a 3D(infinity)(3)[B6O10](2-) network. with the shorthand notation 6: infinity(3)[2 x (3:2 Delta + T)]. The 3D(infinity)(3)[B6O10](2-) network affords intersecting open channels running parallel to three crystallographically axis directions, where Ca2+ cations reside. The IR spectrum further confirms the presence of both BO3 and BO4 groups (C) 2007 Elsevier B.V. All rights reserved.
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JOURNAL OF ALLOYS AND COMPOUNDS
ISSN: 0925-8388
年份: 2008
期: 1-2
卷: 464
页码: 332-336
6 . 2 0 0
JCR@2022
ESI学科: MATERIALS SCIENCE;
JCR分区:1