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Crystal structure and characterization of Rb2Ca[B4O5(OH)(4)](2)center dot 8H(2)O
Zhu, LX; Yue, T; Gao, SY; Hu, MC; Yu, KB
2003-10-15
发表期刊JOURNAL OF MOLECULAR STRUCTURE
卷号658期号:3页码:215-222
文章类型Article
摘要Dirubidium calcium tetraborate octahydrate, Rb2Ca[B4O5(OH)(4)](2).8H(2)O, was prepared by reaction of Rb-borate aqueous solution with CaCl2 and it's structure has been determined by single-crystal X-ray diffraction data. It crystallizes in the orthorhombic system, space group P2(1)2(1)2(1) with unit cell parameters, a = 11.536(2) Angstrom, b = 12.639(2) Angstrom, c = 16.690(4) Angstrom; Z = 4, V = 2433.5(8) Angstrom(3). The structure contains alternate layers of [B4O5(OH)(4)](2-) polyanions separated by water molecules and Rb, Ca cations. The isolated [B4O5(OH)(4)](2-) is constructed from two BO3(OH) tetrahedron groups and two BO2(OH) triangular groups joined at common oxygen atoms. The two B03(OH) tetrahedron groups are further linked by means of an oxygen bridge across the ring. The Ca2+ ion displays seven coordination, while the two non-equivalent Rb+ ions display nine and seven coordination, respectively. Infrared and Raman (4000-400 cm(-1)) spectra of Rb2Ca[B4O5(OH)(4)](2).8H(2)O were recorded at room temperature and analyzed. Fundamental vibrational modes were identified and band assignments were made. The dehydration of this hydrated mixed borate occurs in one step and leads to an amorphous phase which undergoes a crystallization. (C) 2003 Elsevier B.V. All rights reserved.
关键词Rb2ca[B4o5(Oh)(4)](2)Center Dot 8h(2)o Hydrated Mixed Borate Crystal Structure Characterization
WOS标题词Science & Technology ; Physical Sciences
关键词[WOS]NONLINEAR-OPTICAL CRYSTAL ; THERMAL-BEHAVIOR ; SPECTRA ; IR
收录类别SCI
语种英语
WOS研究方向Chemistry
WOS类目Chemistry, Physical
WOS记录号WOS:000185522100007
引用统计
文献类型期刊论文
条目标识符http://ir.isl.ac.cn/handle/363002/6087
专题青海盐湖研究所知识仓储
作者单位1.Chinese Acad Sci, Xian Branch, Inst Salt Lakes, Acad Sinica, Shaanxi 710043, Peoples R China
2.Shaanxi Normal Univ, Inst Appl Chem, Xian 710069, Peoples R China
3.Chinese Acad Sci, Chengdu Branch, Chengdu 610041, Peoples R China
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Zhu, LX,Yue, T,Gao, SY,et al. Crystal structure and characterization of Rb2Ca[B4O5(OH)(4)](2)center dot 8H(2)O[J]. JOURNAL OF MOLECULAR STRUCTURE,2003,658(3):215-222.
APA Zhu, LX,Yue, T,Gao, SY,Hu, MC,&Yu, KB.(2003).Crystal structure and characterization of Rb2Ca[B4O5(OH)(4)](2)center dot 8H(2)O.JOURNAL OF MOLECULAR STRUCTURE,658(3),215-222.
MLA Zhu, LX,et al."Crystal structure and characterization of Rb2Ca[B4O5(OH)(4)](2)center dot 8H(2)O".JOURNAL OF MOLECULAR STRUCTURE 658.3(2003):215-222.
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