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Issue 68, 2020
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Unexpected discovery of calcium cryptates with exceptional stability

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Abstract

A 2,2'-bipyridine-N,N′-dioxide-based cryptand has been found to exhibit exceptional apparent complex stability for Ca2+ and unusually shows very high selectivity for Ca2+ over trivalent lanthanoid cations. The calcium cryptate is kinetically inert to an extent that it even withstands competition experiments with a 77-fold excess of free DOTA ligand, which is currently the chelator with the highest formation constant for calcium.

Graphical abstract: Unexpected discovery of calcium cryptates with exceptional stability

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Supplementary files

Article information


Submitted
10 Jun 2020
Accepted
17 Jul 2020
First published
24 Jul 2020

Chem. Commun., 2020,56, 9874-9877
Article type
Communication

Unexpected discovery of calcium cryptates with exceptional stability

M. F. K. Trautnitz, T. Haas, H. Schubert and M. Seitz, Chem. Commun., 2020, 56, 9874
DOI: 10.1039/D0CC04050A

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