Crown ether chemistry of the alkaline earth nitrates

被引：61

作者：

Junk, PC ^{[1
]}

Steed, JW

机构：

[1] James Cook Univ N Queensland, Dept Chem, Townsville, Qld 4811, Australia

[2] Univ London Kings Coll, Dept Chem, London WC2R 2LS, England

来源：

JOURNAL OF THE CHEMICAL SOCIETY-DALTON TRANSACTIONS | 1999年 / 03期

关键词：

D O I：

10.1039/a807006g

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

Crystallization of the alkaline earth nitrates M(NO3)(2). xH(2)O (M = Mg, x = 6; M = Ca, x = 4; M = Sr or Ba, x = 0) from an aqueous solution of either 15-crown-5 or 18-crown-6 resulted in complex formation in all cases. Thus, [Mg(H2O)(2)(15-crown-5)](3)[NO3](6) and [Mg(H2O)(5)(NO3)]NO3. 18-crown-6 . H2O, [Ca(NO3)(2)(15-crown-5)], [Sr(H2O)(NO3)(2)(15-crown-5)], [Sr(NO3)(2)(18-crown-6)], [Ba(15-crown-5)(2)][Ba(NO3)(3)(15-crown-5)](2) and [Ba(H2O)(NO3)(2)(18-crown-6)] have all been characterized using X-ray crystallography. Wide variations in the co-ordination sphere of the metals are observed as the ionic radius increases, and the mode of bonding to the crown ether varies considerably as the diameter of the crown is modified.

引用

页码：407 / 414

页数：8

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