Measurement of the Dissociation of EuII-Containing Cryptates Using Murexide

Chamika U Lenora; Richard J Staples; Matthew J Allen

doi:10.1021/acs.inorgchem.8b03605

Measurement of the Dissociation of Eu^II-Containing Cryptates Using Murexide

Inorg Chem. 2020 Jan 6;59(1):86-93. doi: 10.1021/acs.inorgchem.8b03605. Epub 2019 Feb 19.

Authors

Chamika U Lenora¹, Richard J Staples², Matthew J Allen¹

Affiliations

¹ Department of Chemistry , Wayne State University , Detroit , Michigan 48202 , United States.
² Department of Chemistry , Michigan State University , East Lansing , Michigan 48824 , United States.

Abstract

The dissociation rates of five Eu^II-containing cryptates in water were measured using UV-visible spectroscopy and murexide at pH 6.5, 7, 7.5, 8, and 9. Murexide was used as a coordinating dye for Eu^II. The results for a known cryptate were within experimental error of the value obtained using other methods and enabled the measurement of other cryptates. This validation of the use of murexide to study the dissociation of Eu^II-containing cryptates enables its use with other complexes of Eu^II.

Grants and funding

R01 EB013663/EB/NIBIB NIH HHS/United States