Issue 8, 2004
From the journal:

Dalton Transactions

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

Eiji Kinoshita,*a   Makoto Takahashi,a   Hironori Takeda,a   Motoo Shirob  and  Tohru Koike*a  

* Corresponding authors

a Department of Functional Molecular Science, Graduate School of Biomedical Sciences, Hiroshima University, Kasumi 1-2-3, Minami-ku, Hiroshima, 734-8551, Japan
E-mail: kinoeiji@hiroshima-u.ac.jp

b Rigaku Cooporation X-ray Research Laboratory, Matsubaracho 3-9-12, Akishima, Tokyo, 196-8666, Japan

Abstract

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−]/[Zn2L3+–PhOPO32−]) is an extremely small value of 2.5 × 10−8 mol dm−3 at 25 °C 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.

Graphical abstract: Recognition of phosphate monoester dianion by an alkoxide-bridged dinuclear zinc(ii) complex

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Article information

DOI
https://doi.org/10.1039/B400269E
Article type
Paper
Submitted
08 Jan 2004
Accepted
09 Mar 2004
First published
22 Mar 2004

Dalton Trans., 2004, 1189-1193

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

E. Kinoshita, M. Takahashi, H. Takeda, M. Shiro and T. Koike, Dalton Trans., 2004, 1189 DOI: 10.1039/B400269E

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