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Related Experiment Videos

Bismuth octaborate, Bi2B8O15.

Bing Teng1, Wen Tao Yu, Ji Yang Wang

  • 1State Key Laboratory of Crystal Materials, Institute of Crystal Materials, Shandong University, Jinan 250100, People's Republic of China. bteng@icm.sdu.edu.cn

Acta Crystallographica. Section C, Crystal Structure Communications
|February 6, 2002
PubMed
Summary

The crystal structure of bismuth borate, Bi(2)B(8)O(15), reveals a unique 3D network. Bismuth atoms bond with oxygen, while boron atoms show sp(2) and sp(3) hybridization, forming triangular and tetrahedral units.

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Area of Science:

  • Inorganic Chemistry
  • Solid-State Chemistry
  • Materials Science

Background:

  • Understanding the structural characteristics of complex oxides is crucial for developing new materials.
  • Bismuth borates represent a class of compounds with potential applications in various fields.
  • Previous studies have explored various bismuth-boron-oxygen systems, but detailed structural analysis of Bi(2)B(8)O(15) is essential.

Purpose of the Study:

  • To elucidate the detailed crystal structure of the title compound, Bi(2)B(8)O(15).
  • To investigate the coordination environment of bismuth and the hybridization states of boron atoms.
  • To understand the connectivity of structural units and the formation of the overall three-dimensional network.

Main Methods:

  • Single-crystal X-ray diffraction was employed to determine the atomic arrangement.

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  • Analysis of bond lengths, bond angles, and coordination numbers provided insights into atomic interactions.
  • Visualization of structural units and network topology was performed.

    • Main Results:

    • The bismuth (Bi) atoms are found to be coordinated by five or six oxygen (O) atoms.
    • Boron (B) atoms exhibit dual hybridization: sp(2) in BO(3) triangles and sp(3) in BO(4) tetrahedra.
    • Three BO(3) triangles link to form a planar B(3)O(6) ring, contributing to the extended structure.

    Conclusions:

    • The crystal structure of Bi(2)B(8)O(15) is characterized by an intricate three-dimensional network formed by interconnected BO(3) triangles, BO(4) tetrahedra, and Bi-O polyhedra.
    • The presence of both sp(2) and sp(3) hybridized boron atoms highlights the versatility of boron coordination in this system.
    • The determined structure provides a fundamental basis for exploring the physical and chemical properties of this bismuth borate compound.