Amorphous Structure of Diboron Trioxide and Sodium Pentaborate Hydrate

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	Amorphous Structure of Diboron Trioxide and Sodium Pentaborate Hydrate
	Zhou Yongquan1 ; Fang Yan1 ; Cao Lingdi 1,2; Zhu Fayan1,2 ; Fang Chunhui1
	2011-01-14
发表期刊	ACTA CHIMICA SINICA
卷号	69 期号:1 页码:46-52
关键词	Amorphous X-ray Diffraction Diboron Trioxide Hydrate Sodium Pentaborate Hydrate Short-range Ordered Structure Radial Distribution Function (Rdf)
摘要	We determined the structures of amorphous diboron trioxide and sodium pentaborate hydrate by X-ray diffractometry. Radial distribution functions (RDF) of those samples were obtained from precisely diffraction data processing. Their short-range ordered structures were determined by model design and quantitative calculations. In amorphous diboron trioxide hydrate, 75% of boron atoms construct planar six-membered boroxol ring and the interatomic distance and the interactions numbers of intra-ring ortho-B -O, meta-O-O, meta-B B and para-B-O were listed out, where boron-oxygen branched-chain intersects with the plane at a terminal-oxygen with a intersect angle of 125 degrees +/- 15 degrees. The basic structure unit of non-crystalline sodium pentaborate hydrate is formed by two planar six-membered boroxol rings deformed, composed of two boron-oxygen triangles (B(Delta)) and a boron-oxygen tetrahedron (B(square)), through the shared B(square). The highly ordered intra-anion interactions are the upmost interactions. Six coordinated Na(+) connects with the terminal-oxygen of pentaborate to form a contact ion pair with a characteristic distance (B-Na) of 0.330 nm.
语种	英语
引用统计
文献类型	期刊论文
条目标识符	http://ir.isl.ac.cn/handle/363002/1888
专题	青海盐湖研究所知识仓储盐湖资源与化学实验室
作者单位	1.Chinese Acad Sci, Qinghai Inst Salt Lakes, CAS Key Lab Salt Lake Resources & Chem, Xining 810008, Peoples R China 2.Chinese Acad Sci, Grad Sch, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Zhou Yongquan,Fang Yan,Cao Lingdi,et al. Amorphous Structure of Diboron Trioxide and Sodium Pentaborate Hydrate[J]. ACTA CHIMICA SINICA,2011,69(1):46-52.
APA	Zhou Yongquan,Fang Yan,Cao Lingdi,Zhu Fayan,&Fang Chunhui.(2011).Amorphous Structure of Diboron Trioxide and Sodium Pentaborate Hydrate.ACTA CHIMICA SINICA,69(1),46-52.
MLA	Zhou Yongquan,et al."Amorphous Structure of Diboron Trioxide and Sodium Pentaborate Hydrate".ACTA CHIMICA SINICA 69.1(2011):46-52.