Hemilability of 2-(1H-imidazol-2-yl)pyridine and 2-(oxazol-2-yl)pyridine ligands: Imidazole and oxazole ring Lewis basicity, Ni(II)/Pd(II) complex structures and spectra
作者:Abiodun O. Eseola、Wen Li、Olalere G. Adeyemi、Nelson O. Obi-Egbedi、Joseph A.O. Woods
DOI:10.1016/j.poly.2010.02.039
日期:2010.5
They were also used to study the substituent effects on the donor strengths as well as the coordination chemistries of the imidazole/oxazole fragments of the hemilabile ligands. All the observed protonation–deprotonation processes found within pH 1–14 media pertain to the imidazole or oxazole rings rather than the pyridyl Lewis bases. The donor characteristics of the imidazole/oxazole ring can be estimated
Palladium(II) complexes bearing 2-(1H-imidazol/oxazol-2-yl)-pyridines: Synthesis, structures and ligand effects in Suzuki–Miyaura cross-coupling
作者:Abiodun Omokehinde Eseola、Daniel Geibig、Helmar Görls、Wen-Hua Sun、Xiang Hao、Joseph Anthony Orighomisan Woods、Winfried Plass
DOI:10.1016/j.jorganchem.2013.12.041
日期:2014.3
P212121. All complexes were utilized as pre-catalysts in a comparative study to probe relevant features of the palladium active species during high temperature Suzuki–Miyaura cross-coupling catalysis. Relatively higher catalytic activities were obtained for complexes bearing the bidentate ligands that possess weaker azole donor arms. Results obtained suggest that ligand dissociation steps may be important