Literature DB >> 15252659

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

Eiji Kinoshita1, Makoto Takahashi, Hironori Takeda, Motoo Shiro, Tohru Koike.   

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+][PhOPO3(2-)]/[Zn2L3+-PhOPO3(2-)]) is an extremely small value of 2.5 x 10(-8) mol dm(-3) at 25 degrees 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.

Entities:  

Year:  2004        PMID： 15252659     DOI： 10.1039/b400269e

Source DB:  PubMed          Journal:  Dalton Trans        ISSN： 1477-9226            Impact factor:   4.390


  37 in total

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9.  Identification on membrane and characterization of phosphoproteins using an alkoxide-bridged dinuclear metal complex as a phosphate-binding tag molecule.

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Journal:  J Biomol Tech       Date:  2007-12

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