Journal article

Authors list: Stöhr, F; Specht, P; Becker, J; Göttlich, R; Schindler, S

Publication year: 2022

Journal: Journal of Inorganic and General Chemistry

Volume number: 648

Issue number: 22

ISSN: 0044-2313

eISSN: 1521-3749

Open access status: Hybrid

DOI Link: https://doi.org/10.1002/zaac.202200278

Publisher: Wiley

Abstract: 
The reaction of dioxygen with copper(I) complexes containing camphor-derived ligands was investigated. Stopped-flow measurements revealed the formation of bis(mu-oxido) copper complexes at low temperatures. However, these intermediates were not stable enough to be isolated and decomposed quickly. Sterically more demanding alkyl groups slowed the formation of the bis(mu-oxido) copper complexes. A kinetic analysis was performed and showed - in line with previous reports - that the rate-determining step could be assigned to forming a mononuclear superoxido copper complex. For one of the reactions investigated, a product could be structurally characterized and turned out to be a copper(II) complex with an additional hydroxide as a ligand (most likely caused by a C-H abstraction from the solvent acetone). One of the complexes oxidized thioanisole to the corresponding sulfoxide (conversion of 34 % according to GC-MS) with no byproducts. Chiral GC gave an enantiomeric excess of 14 %.

Harvard Citation style: Stöhr, F., Specht, P., Becker, J., Göttlich, R. and Schindler, S. (2022) Reactivity of Copper Complexes with Tripodal Tetradentate Ligands based on Camphoric Acid towards Dioxygen, Zeitschrift für anorganische und allgemeine Chemie = Journal of Inorganic and General Chemistry, 648(22), Article e202200278. https://doi.org/10.1002/zaac.202200278

APA Citation style: Stöhr, F., Specht, P., Becker, J., Göttlich, R., & Schindler, S. (2022). Reactivity of Copper Complexes with Tripodal Tetradentate Ligands based on Camphoric Acid towards Dioxygen. Zeitschrift für anorganische und allgemeine Chemie = Journal of Inorganic and General Chemistry. 648(22), Article e202200278. https://doi.org/10.1002/zaac.202200278