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Amorphous Structure of Diboron Trioxide and Sodium Pentaborate Hydrate
Zhou Yongquan1; Fang Yan1; Cao Lingdi1,2; Zhu Fayan1,2; Fang Chunhui1
2011-01-14
Source PublicationACTA CHIMICA SINICA
Volume69Issue:1Pages:46-52
SubtypeArticle
AbstractWe 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.
KeywordAmorphous X-ray Diffraction Diboron Trioxide Hydrate Sodium Pentaborate Hydrate Short-range Ordered Structure Radial Distribution Function (Rdf)
WOS HeadingsScience & Technology ; Physical Sciences
WOS KeywordX-RAY-DIFFRACTION ; VITREOUS BORON TRIOXIDE ; NEUTRON-DIFFRACTION ; CRYSTAL-STRUCTURE ; GLASSES ; OXIDE ; B2O3 ; WATER
Indexed BySCI
Language英语
WOS Research AreaChemistry
WOS SubjectChemistry, Multidisciplinary
WOS IDWOS:000286850500006
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Document Type期刊论文
Identifierhttp://ir.isl.ac.cn/handle/363002/1888
Collection青海盐湖研究所知识仓储
盐湖资源与化学实验室
Affiliation1.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
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.
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