Mono- and dinuclear Pd(II) complexes of different salicylaldimine ligands as catalysts of transfer hydrogenation of nitrobenzene with cyclohexene and Suzuki-Miyaura coupling reactions

E. Tas*, A. Kilic, M. Durgun, I. Yilmaz, I. Ozdemir, N. Gurbuz

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

42 Citations (Scopus)

Abstract

In this study, the synthesis, spectroscopic, catalytic, and electrochemical properties of salicylaldimine Schiff-base ligands (Ln) and their dinuclear Pd(II) complexes for L1 and L2 ligands with mononuclear Pd(II) complexes for L3 and L4 ligands were investigated. The ligands and their mono- or dinuclear Pd(II) complexes were characterized by FT-IR, UV-Vis, 1H NMR and elemental analysis, as well as through magnetic susceptibility and spectroelectrochemical techniques. The catalytic studies showed that the introduction of tert butyl groups on the salicyl ring of the molecules increased the catalytic activity towards hydrogenation of nitrobenzene and cyclohexene in DMF at 25 and 45 °C. It was also observed that the steric hindered mono- and dinuclear Pd(II) complexes were thermally stable complexes and were not sensitive to air or the moisture. The complexes were easily prepared from cheap materials that could be used as versatile and efficient catalysts for different C-C coupling reactions (Suzuki-Miyaura reactions).

Original languageEnglish
Pages (from-to)446-454
Number of pages9
JournalJournal of Organometallic Chemistry
Volume694
Issue number3
DOIs
Publication statusPublished - 1 Feb 2009

Funding

This work was supported, in part, by the Technological and Scientific Research Council of Turkey TUBITAK (TBAG Project No: 106T085).

FundersFunder number
Technological and Scientific Research Council of Turkey TUBITAK106T085

    Keywords

    • Electrochemistry
    • Hydrogenation
    • Mono- and dinuclear Pd(II) complexes
    • Spectroelectrochemistry
    • Suzuki coupling reactions
    • Synthesis

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