Sequential Metal Ion Assembly in Cyclic Phenylazomethine
- 22 September 2006
- journal article
- research article
- Published by American Chemical Society (ACS) in Organic Letters
- Vol. 8 (21), 4723-4726
- https://doi.org/10.1021/ol061758b
Abstract
Cyclic phenylazomethines with methylene spacers (CPA-M) are obtained by dehydration of diamine with diketone. During the titration of CPA-M 4mer with FeCl3, we observe two consecutive isosbestic points in the UV−vis spectra. We conclude that complexation occurs in two consecutive steps. Our analysis suggests that the stepwise metal ion assembly is caused by a difference in the basicity of the imine conformers. Metal ion binding first occurs at the Z imines followed by coordination to the E imine. Finally, metal ion assembly in this compound can be controlled electrochemically.This publication has 15 references indexed in Scilit:
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