Anion-induced disproportionation of Th(III) complexes to form Th(II) and Th(IV) products

Justin C Wedal; Nathalia Cajiao; Michael L Neidig; William J Evans

doi:10.1039/d2cc01272c

Anion-induced disproportionation of Th(III) complexes to form Th(II) and Th(IV) products

Chem Commun (Camb). 2022 Apr 26;58(34):5289-5291. doi: 10.1039/d2cc01272c.

Authors

Justin C Wedal¹, Nathalia Cajiao², Michael L Neidig², William J Evans¹

Affiliations

¹ Department of Chemistry, University of California, Irvine, California 92697-2025, USA. wevans@uci.edu.
² Department of Chemistry, University of Rochester, Rochester, New York 14627, USA. neidig@chem.rochester.edu.

PMID: 35403646
DOI: 10.1039/d2cc01272c

Abstract

A new synthesis of Th(II) complexes has been identified involving addition of simple MX salts (M = Li, Na, K; X = H, Cl, Me, N₃) to Cp''₃Th^III [Cp'' = [C₅H₃(SiMe₃)₂] in the presence of 18-crown-6 or 2.2.2-cryptand, forming [M(chelate)][Cp''₃Th^II] and Cp''₃Th^IVX. Cp^tet₃Th^III (Cp^tet = C₅Me₄H) reacts with KH to form Cp^tet₃Th^IVH and the C-H bond activation product, [K(crypt)]{[Cp^tet₂Th^IVH[η¹:η⁵-C₅Me₃H(CH₂)]}.