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Synthesis, spectroscopic characterization and redox reactivity of the copper(II) salicylaldiminates containing sterically hindered 2,6-diphenylphenol

Date

2003

Author

Kasumov, VT
Koksal, F

Metadata

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Abstract

New bidentate N-(2,6-di-phenyl-1-hydroxyphenyl) salicylaldimines bearing X = H and 3,5-di-t-butyl substituents on the salicylaldehyde ring, (LH)-H-x, and their copper(II) complexes, Cu(L-x)(2), have been synthesized and characterized by i.r., u.v./ vis., H-1- n.m. r., C-13- n. m. r., e. s. r. spectroscopy and magnetic susceptibility measurements. E.s.r. study has shown that chemical oxidation of Cu(L-x)(2) with PbO2 produces ligand-centered Cu-II-phenoxyl radical species. The complexes are easily reduced with PPh3 via intramolecular electron transfer from ligand to copper(II) to give unstable radical intermediates, which in time are converted to another stable secondary radical species. The analysis of e.s.r. spectra of Cu(L-x)(2) and generated radical intermediates are presented.

Source

Transition Metal Chemistry

Volume

28

Issue

8

URI

https://doi.org/10.1023/A:1026316032127
https://hdl.handle.net/20.500.12712/21709

Collections

  • Scopus İndeksli Yayınlar Koleksiyonu [14046]
  • WoS İndeksli Yayınlar Koleksiyonu [12971]



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