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
摘要合成并研究了14种新的有机分子A1-A4,B1-B5,C1-C4和D以及一系列过渡金属(II)配合物(Ni1-Ni9和Pd1-Pd2b),以表征2-的半透明性(1H-咪唑-2-基)吡啶和2-(恶唑-2-基)吡啶配体(A1-A4 = 2-R2-6-(4,5-二苯基-1R1-咪唑-2-基)吡啶, R1 = H或CH3,R2 = H或CH3; B1-B5 = 1-R2-2-(吡啶-2-基)-1R1-菲[9,10-d]咪唑/恶唑,R1 = H或CH3, R2 = H或CH3; C1-C4 = 2-(6-R2-吡啶-2-基)-1H-咪唑/恶唑[4,5-f] [1,10]菲咯啉,R2 = H或CH3; D = 2-甲磺酰基-1H-咪唑并[4,5-f] [1,10]菲咯啉)。它们还用于研究取代基对供体强度的影响以及半不稳定配体的咪唑/恶唑片段的配位化学。在pH 1-14介质中发现的所有观察到的质子化