Mono- and dinuclear Pd(II) complexes of different salicylaldimine ligands as catalysts of transfer hydrogenation of nitrobenzene with cyclohexene and Suzuki-Miyaura coupling reactions
Küçük Resim Yok
Tarih
2009
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Elsevier Science Sa
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
In this study, the synthesis, spectroscopic, catalytic, and electrochemical properties of salicylaldimine Schiff-base ligands (L-n) and their dinuclear Pd(II) complexes for L-1 and L-2 ligands with mononuclear Pd(II) complexes for L-3 and L-4 ligands were investigated. The ligands and their mono- or dinuclear Pd(II) complexes were characterized by FT-IR, UV-Vis, H-1 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 degrees 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). (C) 2008 Elsevier B.V. All rights reserved.
Açıklama
Anahtar Kelimeler
Synthesis, Mono- and dinuclear Pd(II) complexes, Hydrogenation, Suzuki coupling reactions, Electrochemistry, Spectroelectrochemistry
Kaynak
Journal of Organometallic Chemistry
WoS Q Değeri
Q2
Scopus Q Değeri
Q3
Cilt
694
Sayı
3
