Recognition of phosphate monoester dianion by an alkoxide-bridged dinuclear zinc(II) complex

被引：170

作者：

Kinoshita, E

Takahashi, M

Takeda, H

Shiro, M

Koike, T

机构：

[1] Hiroshima Univ, Grad Sch Biomed Sci, Dept Funct Mol Sci, Minami Ku, Hiroshima 7348551, Japan

[2] Rigaku Corp, Xray Res Lab, Tokyo 1968666, Japan

来源：

DALTON TRANSACTIONS | 2004年 / 08期

关键词：

D O I：

10.1039/b400269e

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

Recognition of phosphate monoester dianion by an alkoxide-bridged dinuclear zinc(II) complex (Zn2L3+) has been studied (L = alkoxide species of 1,3-bis[bis(pyridin-2-ylmethyl)amino]propan-2-ol). Potentiometric pH titration study disclosed a 1 : 1 phenyl phosphate complexation with Zn2L3+ in aqueous solution. The dissociation constant (= [Zn2L3+][PhOPO32-]/[Zn2L+-PhOPO32-]) is an extremely small value of 2.5 x 10(-8) mol dm(-3) at 25degreesC with I = 0.10 (NaNO3). The X-ray crystal analysis of the dizinc(II) complex with p-nitrophenyl phosphate showed that the phosphate dianion binds as a bridging ligand to the two zinc(II) ions.

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页码：1189 / 1193

页数：5

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