Dicopper(I,I) and delocalized mixed-valent dicopper(I,II) complexes of a sterically hindered carboxylate ligand

John R. Hagadorn, Theresa I. Zahn, Lawrence Que, William B. Tolman

Research output: Contribution to journalArticlepeer-review

25 Scopus citations

Abstract

Admixture of the lithium salt of the bulky ligand 2,6-dimesitylbenzoate [ArCO2]- with [Cu(CH3CN)4]O 3SCF3 yielded the dicopper(I,I) complex [(ArCO 2)2Cu2(THF)2)] (1), which upon oxidation with AgX (X = SbF6- or ClO4 -) in THF afforded the mixed-valent complexes [(ArCO 2)2Cu2(THF)2]SbF6 (2) and [(ArCO2)2Cu2(THF)3]ClO4 (3), respectively. Fully delocalized mixed-valent (Cu1.5Cu 1.5) formulations for 2 and 3 were determined on the basis of X-ray crystallography and UV-vis, resonance Raman, 1H NMR, and EPR spectroscopy. Notably, solvent dependent UV-vis spectra suggest that THF and/or counter ion coordination influence the intermetal bonding interactions in the mixed-valent cores.

Original languageEnglish (US)
Pages (from-to)1790-1794
Number of pages5
JournalDalton Transactions
Issue number9
DOIs
StatePublished - May 7 2003

Fingerprint

Dive into the research topics of 'Dicopper(I,I) and delocalized mixed-valent dicopper(I,II) complexes of a sterically hindered carboxylate ligand'. Together they form a unique fingerprint.

Cite this