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H 2 InB 5 O 10 : A New Pentaborate Constructed from 2D Tetrahedrally Four‐Connected Borate Layers and InO 6 Octahedra
Author(s) -
Cong Rihong,
Yang Tao,
Li Hongmei,
Liao Fuhui,
Wang Yingxia,
Lin Jianhua
Publication year - 2010
Publication title -
european journal of inorganic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 1434-1948
DOI - 10.1002/ejic.200901078
Subject(s) - boron , chemistry , octahedron , crystallography , boric acid , monoclinic crystal system , crystal structure , group (periodic table) , indium , inorganic chemistry , organic chemistry
H 2 InB 5 O 10 , a new hydrated indium pentaborate, was prepared by the boric acid flux method and characterized by IR, solid‐state 11 B MAS NMR and 1 H CRAMPS NMR spectroscopy. Its structure was determined by powder X‐ray diffraction and refined by Rietveld analysis. H 2 InB 5 O 10 crystallizes in the monoclinic space group C 2. The structure features a new 2D tetrahedrally four‐connected borate network constructed from a new pentaborate fundamental building block, B 5 O 14 . The 2D borate network is formed by two 6 3 borate layers linked by additional BO 4 groups in a spiro‐5 mode and then combines with InO 6 octahedra to give rise to the 3D structure of H 2 InB 5 O 10 . The strong hydrogen bonds that cross‐link oxygen atoms of additional BO 4 groups between the borate layers help to stabilize the borate network.