Guanidinium ion as a symmetrical template in the formation of cubic hydrogen-bonded borate networks with the boracite topology

被引：47

作者：

Abrahams, BF ^{[1
]}

Haywood, MG ^{[1
]}

Robson, R ^{[1
]}

机构：

[1] Univ Melbourne, Sch Chem, Melbourne, Vic 3010, Australia

来源：

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY | 2005年 / 127卷 / 03期

关键词：

D O I：

10.1021/ja044200c

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Reaction between boric acid and guanidinium salts in methanolic solution at room temperature in the presence of various bases and anions gives well-formed solvated crystals of composition {[B(OCH3)4]3[C(NH2)3]4}+X-. The products in which X- = Cl- and PF6- are characterized by single-crystal X-ray diffraction. The tetramethoxyborate and guanidinium components form a highly symmetrical (cubic) hydrogen-bonded 3D network having the "boracite topology" [i.e., the (63)(6284) topology]. Highly disordered solvent molecules and anions occupy methyl-surfaced cavities and channels that represent more than 30% of the space. Copyright © 2005 American Chemical Society.

引用

页码：816 / 817

页数：2

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