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Lead zinc borate, PbZn2(BO3)2.

Xue An Chen1, Ying Hua Zhao, Xin An Chang

  • 1College of Materials Science and Engineering, Beijing University of Technology, Ping Le Yuan 100, Beijing 100022, People's Republic of China. xueanchen@bjut.edu.cn

Acta Crystallographica. Section C, Crystal Structure Communications
|January 7, 2006
PubMed
Summary

This study reveals a new crystal structure for lead zinc borate, PbZn2(BO3)2. This novel structure features a 3D framework with channels accommodating lead cation lone pairs.

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Area of Science:

  • Inorganic Chemistry
  • Crystallography
  • Materials Science

Background:

  • Borate compounds are known for diverse structures and properties.
  • Lead compounds often exhibit interesting electronic and structural behaviors due to lone pairs.

Purpose of the Study:

  • To determine the crystal structure of PbZn2(BO3)2.
  • To characterize the arrangement of Pb2+ cations and ZnBO3 layers.
  • To investigate the role of Pb2+ lone pairs in the crystal framework.

Main Methods:

  • Single-crystal X-ray diffraction was used to determine the crystal structure.
  • Analysis of crystallographic data, including space group and atomic positions.
  • Structural visualization and interpretation of the 3D framework.

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Main Results:

  • PbZn2(BO3)2 crystallizes in the Pccn space group.
  • A new structure type was identified, featuring ZnBO3 layers bridged by Pb2+ cations.
  • A three-dimensional framework with channels along the [010] direction was formed.
  • Stereochemically active Pb2+ lone pairs were found to occupy these channels.

Conclusions:

  • The discovery of the PbZn2(BO3)2 structure expands the known family of inorganic borates.
  • The arrangement highlights the influence of Pb2+ lone pair stereochemistry on crystal packing.
  • This new structure provides a platform for exploring related materials with potential applications.