Spectroscopic Investigation of Interactions between Dipeptides and Vanadate(V) in Solution

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• 作者：Olivier Durupthy ; Aur&eacute ; lie Coup&eacute ; Lawrence Tache ; Marie-Noë ; lle Rager ; Jocelyne Maquet ; Thibaud Coradin ; Nathalie Steunou ; and Jacques Livage
• 刊名：Inorganic Chemistry
• 出版年：2004
• 出版时间：March 22, 2004
• 年：2004
• 卷：43
• 期：6
• 页码：2021 - 2030
• 全文大小：151K
• 年卷期：v.43,no.6(March 22, 2004)
• ISSN：1520-510X

文摘

The reaction of vanadate(V) with a series of dipeptides (Val-Gln, Ala-Gln, Gly-Gln, Gly-Glu, and Ala-Gly) wasinvestigated by UV-visible spectroscopy and multinuclear (⁵¹V, ¹⁴N, ¹³C) NMR spectroscopy in solution. It waspossible to evaluate the formation constants of the corresponding complexes for which a molecular structure wasproposed. Complex formation is favored by the presence of a functionalized or a sterically demanding side chain.The Val-Gln dipeptide which combines both properties exhibits one of the highest formation constant reported sofar for dipeptides.