Ca2+- and Ba2+-selective receptors based on site-selective transmetalation of multinuclear polyoxime-zinc(II) complexes

被引：122

作者：

Akine, S ^{[1
]}

Taniguchi, T ^{[1
]}

Saiki, T ^{[1
]}

Nabeshima, T ^{[1
]}

机构：

[1] Univ Tsukuba, Dept Chem, Tsukuba, Ibaraki 3058571, Japan

来源：

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY | 2005年 / 127卷 / 02期

关键词：

D O I：

10.1021/ja046790k

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Ca2+-selective recognition was achieved by using the site-selective transmetalation of homotrinuclear metallohost [L1 Zn3]2+ containing a linear tetraoxime ligand. The selectivity (log(KCa/KMg) > 5.1) is comparable to those of the excellent Ca2+ receptors or sensors such as BAPTA, Quin2, and K23E1. X-ray crystallography revealed that the Ca2+ complex [L1Zn2Ca]2+ has a helical structure. On the other hand, the larger analogue H6L2 - gave a mixture of [L2Zn4]2+ isomers, which selectively recognizes Ba2+ to give a single tetranuclear complex, [L2Zn3Ba]2+. Copyright © 2005 American Chemical Society.

引用

页码：540 / 541

页数：2

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