Crystal structure and characterization of Rb2Ca[B4O5(OH)(4)](2)center dot 8H(2)O

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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
关键词	Rb2ca[B4o5(Oh)(4)](2)Center Dot 8h(2)o Hydrated Mixed Borate Crystal Structure Characterization
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.
语种	英语
引用统计	正在获取...
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中国科学院青海盐湖研究所
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
推荐引用方式 GB/T 7714	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.