Square-Pyramidal/Triangular Framework Oxide: Synthesis and Structure of PKU-6
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- 作者：Tao Yang ; Jing Ju ; Guobao Li ; Fuhui Liao ; Xiaodong Zou ; Feng Deng ; Lei Chen ; Yingxia Wang ; Jianhua Lin
- 刊名：Inorganic Chemistry
- 出版年：2007
- 出版时间：June 11, 2007
- 年：2007
- 卷：46
- 期：12
- 页码：4772 - 4774
- 全文大小：106K
- 年卷期：v.46,no.12(June 11, 2007)
- ISSN：1520-510X
文摘
PKU-6, a new aluminoborate (HAl2B3O8), has been synthesizedin a closed system at 400 
C. The structure of PKU-6, characterized by using powder and single-crystal X-ray diffraction, consistsof AlO5 square-pyramidal chains and B3O7 groups, which areinterconnected and form a three-dimensional framework. The 27AlNMR study indicates that the isotropic chemical shift of pyramidalAl is 34.6 ppm with a large quadrupolar coupling constant (CQ =4.2 MHz), mainly due to a nonspherical coordination environment.
C. The structure of PKU-6, characterized by using powder and single-crystal X-ray diffraction, consistsof AlO5 square-pyramidal chains and B3O7 groups, which areinterconnected and form a three-dimensional framework. The 27AlNMR study indicates that the isotropic chemical shift of pyramidalAl is 34.6 ppm with a large quadrupolar coupling constant (CQ =4.2 MHz), mainly due to a nonspherical coordination environment.