A new series of Ni(II), Cu(II), Co(II) and Pd(II) complexes with an ONS donor Schiff base: Synthesis, crystal structure, catalytic properties and bioactivities
作者:Mukul Kalita、Prasanta Gogoi、Pranjit Barman、Bipul Sarma、Alok K. Buragohain、Ranjan D. Kalita
DOI:10.1016/j.poly.2014.02.043
日期:2014.5
new series of bichelated complexes of the formula M(L) 2 and M(L)Cl, where M = Ni(II), Cu(II), Co(II) and Pd(II) and L = a deprotonated Schiff base, were synthesized from the reaction of 5-bromo N-[(2-benzylthio)-phenyl] salicylaldimine (HL, 1 ), a new potential tridentate (O, N, S donor) Schiff base, with metal salts in methanol medium, and the complexes were characterized by a variety of physicochemical
摘要一系列新的式M(L)2和M(L)Cl的双螯合物,其中M = Ni(II),Cu(II),Co(II)和Pd(II),L =去质子化的席夫碱是由5-溴N-[(2-苄硫基)-苯基]水杨醛亚胺(HL,1)(一种新的潜在三齿(O,N,S供体)席夫碱)与金属盐在甲醇介质中的反应合成的,并通过多种物理化学技术对复合物进行表征,即元素分析,FT-IR,1 H NMR和UV-Vis光谱,热重分析和电导率研究。通过单晶X射线衍射研究确定了钯配合物的配位模式,发现其具有扭曲的方形平面结构,配体通过羟基氧作为单负电荷的三齿螯合剂进行配位,甲亚胺氮和硫醚硫原子,其余的第四配位位点被氯离子填充。使用H 2 O 2作为氧化剂,铜络合物对有机硫醚氧化为相应的亚砜和砜具有非常好的催化活性。所述配体和复合物对肺炎克雷伯菌(ATCC 10536),金黄色葡萄球菌(ATCC 11632)和白色念珠菌具有相当大的抗菌和抗真菌活性。