A chiral lead borate containing infinite and finite chains built up from BO4 and BO3 units

被引：88

作者：

Yu, ZT ^{[1
]}

Shi, Z ^{[1
]}

Jiang, YS ^{[1
]}

Yuan, HM ^{[1
]}

Chen, JS ^{[1
]}

机构：

[1] Jilin Univ, Dept Chem, State Key Lab Inorgan Synth & Preparat Chem, Changchun 130023, Peoples R China

来源：

CHEMISTRY OF MATERIALS | 2002年 / 14卷 / 03期

关键词：

D O I：

10.1021/cm010387k

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

With a hydrothermal technique, a novel chiral lead borate (Pb6B11O18(OH)(9)) has been prepared. The sample has been characterized by powder X-ray diffraction, infrared spectroscopy, energy-dispersive spectroscopy, thermal analysis, and second-harmonic generation powder measurement. The structure of the compound, which crystallizes in the trigonal space group P3(2) with lattice constants a = 11.7691(7) Angstrom and c = 13.3361(121) Angstrom has been solved by single-crystal X-ray diffraction analysis. There exist infinite helical chains and finite chain fragments built up from BO4 and BO3 units. In the compound the Pb2+ cations are located in the space between adjacent polyborate anionic chains, compensating the negative charges of the chains. The chiral feature of the lead borate is unique, and because it lacks symmetry center, the compound exhibits distinct NLO properties.

引用

页码：1314 / 1318

页数：5

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