Structural Characterization of the [CuOR]2+ Core

V. Mahesh Krishnan
,
Dimitar Y. Shopov
,
Caitlin J. Bouchey
,
Wilson Bailey
,
Riffat Parveen
,
Bess Vlaisavljevich

Washington University in St. Louis

Research Output:

Contribution to journal

Article

Peer-review

Abstract

Formal Cu(III) complexes bearing an oxygen-based auxiliary ligand ([CuOR]2+, R = H or CH2CF3) were stabilized by modulating the donor character of supporting ligand LY (LY = 4-Y, N,N′-bis(2,6-diisopropylphenyl)-2,6-pyridinedicarboxamide, Y = H or OMe) and/or the basicity of the auxiliary ligand, enabling the first characterization of these typically highly reactive cores by NMR spectroscopy and X-ray crystallography. Enhanced lifetimes in solution and slowed rates of PCET with a phenol substrate were observed. NMR spectra corroborate the S = 0 ground states of the complexes, and X-ray structures reveal shortened Cu–ligand bond distances that match well with theory.

Bibliographic Information

Output type

Research Output:

Contribution to journal

Article

Peer-review

Original language

American English

Pages from-to (Number of pages)

Pages 3295 (3299 pages)

Journal (Volume, Issue Number)

Journal of the American Chemical Society (Volume 143, Issue 9)

Publication milestones

Published - 23/02/2021

Publication status

Published - 23/02/2021

ISSN

0002-7863

Publication IDs

Scopus: 85101880545