Neutral N-O chelated palladium(II) complexes: Syntheses, characterization, and reactivity

Myeongsoon Kang, Ayusman Sen

Research output: Contribution to journalArticlepeer-review

30 Scopus citations

Abstract

A series of neutral salicylaldiminato Pd(II) complexes, Pd(Me)(Ph-CH=N-R′)[3- tBu-2-(O)-C 6H 3-CH=N-2,6-di iPr-C 6H 3] (R = CH 3, n-Pr, tert-Bu, Ph, benzyl) (3a-3e) and Pd(Me)[2-(CH=N-t-Bu)-Py][3- tBu-2-(O)C 6H 3-CH=N-2,6-di- iPr-C 6H 3] (4), have been synthesized and characterized. The structures of complexes 3a, 3c-3e, and 4 have been confirmed by X-ray analysis. NMR studies utilizing 3c indicate that the insertion of CO into the Pd-Me bond occurs through a five-coordinate intermediate. The acyl compounds in turn undergo imine insertion. The neutral complexes 3a-3e show moderate catalytic activity for the polymerization of methyl acrylate at ambient temperature. However, a radical rather than vinyl insertion mechanism appears to be operative.

Original languageEnglish (US)
Pages (from-to)3508-3515
Number of pages8
JournalOrganometallics
Volume24
Issue number14
DOIs
StatePublished - Jul 4 2005

All Science Journal Classification (ASJC) codes

  • Physical and Theoretical Chemistry
  • Organic Chemistry
  • Inorganic Chemistry

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