2.2.2-Cryptand as a bidentate ligand in rare-earth metal chemistry. Issue 22 (13th October 2020)

• Record Type: Journal Article
• Authors: Chung, Amanda B.; Huh, Daniel N.; Ziller, Joseph W.; Evans, William J.
• Is Part Of: Inorganic chemistry frontiers. Volume 7:Issue 22(2020)
• Page Start: 4445
• Page End: 4451
• Publication Date: 2020-10-13
• Subjects: Chemistry, Inorganic -- Periodicals; 546.05
• DOI: 10.1039/d0qi00746c
• Languages: English
• ISSNs: 2052-1553

Abstract

Abstract : Crystal structures demonstrate that 2.2.2-cryptand can function as a κ 2 -O, O′ bidentate ligand to rare-earth metal ions. Abstract : The 2.2.2-cryptand ligand (crypt) that is heavily used in reductions of rare-earth metal complexes to encapsulate alkali metals has been found to function as a bidentate ligand to rare-earth metal ions in some cases. The X-ray crystal structures of the reduced dinitrogen metal complex, [{(R2 N)2 Ce(crypt-κ 2 -O, O′)}2 (μ–η 2 :η 2 -N2 )] (R = SiMe3 ), and the ytterbium metallocene, (C5 Me5 )2 Yb(crypt-κ 2 -O, O′), are presented to demonstrate this binding mode. The implications of this available binding mode in rare-earth metal cryptand chemistry are discussed.