Potentiometric Studies of Binary and Ternary Complexes Involving Cadmium(II) and Nitrilo-Tris(Methyl Phosphonic Acid) with Amino Acids, peptides and DNA Constituents
{"title":"Potentiometric Studies of Binary and Ternary Complexes Involving Cadmium(II) and Nitrilo-Tris(Methyl Phosphonic Acid) with Amino Acids, peptides and DNA Constituents","authors":"Azza A. Shoukry, Mohamed M. Shoukry","doi":"10.1002/adic.200790057","DOIUrl":null,"url":null,"abstract":"<p>The complexing properties of nitrilo-tris(methylphosphonic acid) (NTP) with cadmium(II) were investigated pH-metrically at 25 °C and at ionic strength of 0.1 mol dm<sup>-3</sup> (NaNO<sub>3</sub>). Stoichiometry and stability constants for the complexes formed are reported. Cadmium (II) forms Cd(NTP)<sup>4-</sup> and the corresponding hydroxy complexes. The ternary complexes are formed in a stepwise mechanism whereby NTP binds to cadmium(II), followed by coordination of amino acids, peptides or DNA. The concentration distribution of the various complex species has been evaluated.</p>","PeriodicalId":8193,"journal":{"name":"Annali di chimica","volume":"97 8","pages":"733-745"},"PeriodicalIF":0.0000,"publicationDate":"2007-07-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1002/adic.200790057","citationCount":"3","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Annali di chimica","FirstCategoryId":"1085","ListUrlMain":"https://onlinelibrary.wiley.com/doi/10.1002/adic.200790057","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 3
Abstract
The complexing properties of nitrilo-tris(methylphosphonic acid) (NTP) with cadmium(II) were investigated pH-metrically at 25 °C and at ionic strength of 0.1 mol dm-3 (NaNO3). Stoichiometry and stability constants for the complexes formed are reported. Cadmium (II) forms Cd(NTP)4- and the corresponding hydroxy complexes. The ternary complexes are formed in a stepwise mechanism whereby NTP binds to cadmium(II), followed by coordination of amino acids, peptides or DNA. The concentration distribution of the various complex species has been evaluated.
求助内容：
应助结果提醒方式：
京公网安备 11010802042870号
