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题名: Amorphous Structure of Diboron Trioxide and Sodium Pentaborate Hydrate
作者: 周永全1;  房艳1;  Cao Lingdi1, 2;  Zhu Fayan1, 2;  房春晖1
刊名: ACTA CHIMICA SINICA
出版日期: 2011-01-14
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)
文章类型: Article
英文摘要: 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.
WOS标题词: Science & Technology ;  Physical Sciences
类目[WOS]: Chemistry, Multidisciplinary
研究领域[WOS]: Chemistry
关键词[WOS]: X-RAY-DIFFRACTION ;  VITREOUS BORON TRIOXIDE ;  NEUTRON-DIFFRACTION ;  CRYSTAL-STRUCTURE ;  GLASSES ;  OXIDE ;  B2O3 ;  WATER
收录类别: SCI
语种: 英语
WOS记录号: WOS:000286850500006
Citation statistics: 
内容类型: 期刊论文
URI标识: http://ir.isl.ac.cn/handle/363002/1888
Appears in Collections:青海盐湖研究所知识仓储(2014年之前)_期刊论文

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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

Recommended Citation:
Zhou Yongquan,Fang Yan,Cao Lingdi,et al. Amorphous Structure of Diboron Trioxide and Sodium Pentaborate Hydrate[J]. ACTA CHIMICA SINICA,2011-01-14,69(1, 1):46-52.
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