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Issue 8, 2004
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Recognition of phosphate monoester dianion by an alkoxide-bridged dinuclear zinc(II) complex

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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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Publication details

The article was received on 08 Jan 2004, accepted on 09 Mar 2004 and first published on 22 Mar 2004


Article type: Paper
DOI: 10.1039/B400269E
Citation: Dalton Trans., 2004,0, 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, 0, 1189
    DOI: 10.1039/B400269E

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