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作者:

Chen Xue-An (Chen Xue-An.) | Zuo Jian-Long (Zuo Jian-Long.) | Chang Xin-An (Chang Xin-An.) | Zang He-Gui (Zang He-Gui.) | Xiao Wei-Qiang (Xiao Wei-Qiang.)

收录:

SCIE PKU CSCD

摘要:

A novel ternary borate, sodium strontium pentaborate, NaSrB5O9, has been prepared by solid-state reaction below 800 degrees C. The single-crystal X-ray structural analysis showed that NaSrB5O9 crystallizes in monoclinic, space group P2(1)/c with a = 6.499(2), b = 13.979(3), c = 8.045(2) angstrom, beta = 106.92(2)degrees, V = 699.2(3) angstrom(3), Z = 4, M-r = 308.66, D-c = 2.932 g/cm(3), mu = 7.804 mm(-1), F(000) = 584, R = 0.0264 and wR = 0.0621 for 2426 observed reflections and 146 variables. NaSrB5O9 is a layered compound containing double ring B5O11 building units composed of two BO4 tetrahedra and three BO3 triangles. Each B5O11 unit is connected to four other equivalent units through exocyclic oxygen atoms to form a two-dimensional (2)(infinity)[(BO9)-O-5](3-) layer. Symmetry-center related layers are stacked along the b axis and held together by Na+ and Sr2+ cations via electrostatic interactions.

关键词:

borate crystal structure NaSrB5O9 synthesis

作者机构:

  • [ 1 ] Beijing Univ Technol, Coll Mat Sci & Engn, Beijing 100022, Peoples R China
  • [ 2 ] Beijing Univ Technol, Inst Microstruct & Property Adv Mat, Beijing 100022, Peoples R China

通讯作者信息:

  • [Chen Xue-An]Beijing Univ Technol, Coll Mat Sci & Engn, Beijing 100022, Peoples R China

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来源 :

CHINESE JOURNAL OF STRUCTURAL CHEMISTRY

ISSN: 0254-5861

年份: 2007

期: 9

卷: 26

页码: 1081-1086

2 . 2 0 0

JCR@2022

ESI学科: CHEMISTRY;

JCR分区:4

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