Unexpected discovery of calcium cryptates with exceptional stability. Issue 68 (28th July 2020)

• Record Type: Journal Article
• Authors: Trautnitz, Markus F. K.; Haas, Tobias; Schubert, Hartmut; Seitz, Michael
• Is Part Of: Chemical communications. Volume 56:Issue 68(2020)
• Page Start: 9874
• Page End: 9877
• Publication Date: 2020-07-28
• Subjects: Chemistry -- Periodicals; 540
• DOI: 10.1039/d0cc04050a
• Languages: English
• ISSNs: 1359-7345

Abstract

Abstract : A 2, 2′-bipyridine- N, N ′-dioxide-based cryptand has been found to exhibit exceptional apparent complex stability for Ca 2+ and unusually shows very high selectivity for Ca 2+ over trivalent lanthanoid cations. Abstract : A 2, 2'-bipyridine- N, N ′-dioxide-based cryptand has been found to exhibit exceptional apparent complex stability for Ca 2+ and unusually shows very high selectivity for Ca 2+ 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.