Issue 25, 2015

Chelate effects in sulfate binding by amide/urea-based ligands

Abstract

The influence of chelate and mini-chelate effects on sulfate binding was explored for six amide-, amide/amine-, urea-, and urea/amine-based ligands. Two of the urea-based hosts were selective for SO42− in water-mixed DMSO-d6 systems. Results indicated that the mini-chelate effect provided by a single urea group with two NH binding sites appears to provide enhanced binding over two amide groups. Furthermore, additional urea binding sites incorporated into the host framework appeared to overcome to some extent competing hydration effects with increasing water content.

Graphical abstract: Chelate effects in sulfate binding by amide/urea-based ligands

Supplementary files

Article information

Article type
Paper
Submitted
29 mar 2015
Accepted
30 apr 2015
First published
01 may 2015

Org. Biomol. Chem., 2015,13, 6953-6957

Author version available

Chelate effects in sulfate binding by amide/urea-based ligands

C. Jia, Q. Wang, R. A. Begum, V. W. Day and K. Bowman-James, Org. Biomol. Chem., 2015, 13, 6953 DOI: 10.1039/C5OB00618J

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