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[O 2 Pb 3 ] 2 (BO 3 )Br: An Oxidoborate Oxide Bromide with the ∞ 1 [O 2 Pb 3 ] Double Chains Based on Edge‐sharing OPb 4 Tetrahedra
Author(s) -
Dong Lingyun,
Yang Jiao,
Shen Shigang,
Liu Zhenzhen,
Chen Xiaojing,
Sun Sufang
Publication year - 2017
Publication title -
zeitschrift für anorganische und allgemeine chemie
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.354
H-Index - 66
eISSN - 1521-3749
pISSN - 0044-2313
DOI - 10.1002/zaac.201600416
Subject(s) - orthorhombic crystal system , crystallography , tetragonal crystal system , bromine , crystal structure , spectroscopy , space group , octahedron , bromide , oxide , infrared spectroscopy , materials science , chemistry , analytical chemistry (journal) , x ray crystallography , inorganic chemistry , diffraction , physics , chromatography , metallurgy , organic chemistry , quantum mechanics , optics
Through extensive research on the PbO / PbBr 2 / B 2 O 3 system, a new single crystal of yellow lead‐containing oxyborate bromine, [O 2 Pb 3 ] 2 (BO 3 )Br, was grown from the melt. It crystallizes in the centrosymmetric space group Cmcm (no. 63) of the orthorhombic system with the following unit cell dimensions: a = 9.5748(8) Å, b = 20.841(2) Å, c = 5.7696(5) Å, and Z = 4. The whole structure is characterized by an infinite one‐dimensional (1D) ∞ 1 [O 2 Pb 3 ] double chain, which is based on the OPb 4 oxocentered tetrahedra and considered as the derivative of the continuous sheet of OPb 4 tetrahedra from the tetragonal modification of α‐PbO. The 1D ∞ 1 [O 2 Pb 3 ] double chains are further bridged by the BO 3 units through common oxygen atoms to form two‐dimensional (2D) ∞ 1 [[(O 2 Pb 3 )(BO 3 )] layers, with Br atoms situated between the layers. IR spectroscopy, UV/Vis/NIR diffuse reflectance spectroscopy, and thermal analysis were also performed on the reported material.