✦ LIBER ✦

Amino acids binding to Zn2+-cyclen molecular receptor in aqueous solution

✍ Scribed by Z. Vargová; E. Balentová; M. Walko; L. Arabuli; P. Hermann; I. Lukeš

Publisher: John Wiley and Sons
Year: 2011
Tongue: English
Weight: 184 KB
Volume: 24
Category: Article
ISSN: 0952-3499
DOI: 10.1002/jmr.1059

No coin nor oath required. For personal study only.

✦ Synopsis

Abstract

Potentiometric titrations and ^1^H NMR spectroscopic studies of amino acids binding to the [ZnL]^2+^‐complex where L = cyclen in aqueous solution provide information concerning complexing species identity, their stability, and coordination mode declaration. The amino acids form stable ternary [ZnL(HL^n^)]^2+^ and [ZnL(L^n^)]^+^ complexes. The observations indicate bidentate coordination mode of the deprotonated amino acids, involving both the amine and the carboxylate functions to the [ZnL]^2+^ complex in pH region of about 7.5–9.5. The determined stability constants indicate that [ZnL]^2+^ complex is a very efficient receptor for simple amino acids such as glycine and alanine. Copyright © 2010 John Wiley & Sons, Ltd.

📜 SIMILAR VOLUMES

Binding of Pertechnetate to Uranyl(VI) i

Binding of Pertechnetate to Uranyl(VI) in Aqueous Solution. A Density Functional Theory Molecular Dynamics Study.

✍ Michael Buehl; Volodymyr Golubnychiy 📂 Article 📅 2007 🏛 John Wiley and Sons ⚖ 11 KB 👁 2 views

Apparent and partial molar heat capaciti

Apparent and partial molar heat capacities and volumes of the amino acids l -lysine monohydrochloride andl -arginine monohydrochloride in aqueous solution at temperatures from T =  288.15 K to T =  328.15 K

✍ Andrew W. Hakin; Gavin R. Hedwig 📂 Article 📅 2001 🏛 Elsevier Science 🌐 English ⚖ 213 KB

Relative densities and massic heat capacities have been determined for the amino acids L-lysine monohydrochloride and L-arginine monohydrochloride in aqueous solution at the temperatures T = (288. 15, 298.15, 313.15, and 328.15) K. These data have been used to calculate apparent molar properties whi