Complexes of hexadentate nso donor ligands-III. Nickel(II) complexes of 1,3-di(o-salicylaldiminophenylthio)propane and 1,2-di(o-salicylaldiminophenylthio)xylene
摘要:
Nickel(II) complexes of the hexadentate N2S2O2 donor ligands, 1,3-di(o-salicylaldiminophenylthio)propane (H(2)DSALPTP) and 1,2-di(o-salicylaldiminophenylthio)xylene (H(2)DSALPTX) have been synthesised and characterised. H(2)DSALPTP reacted with NiCl2.6H(2)O or Ni(ClO4)(2).6H(2)O in presence of ammonia to give the complex [Ni(DSALPTP)] (1). H(2)DSALPTX reacted smoothly with N(ClO4)(2) to yield the corresponding complex [Ni(DSALPTX)] (2). The ligand did not react with NiCl2 in the absence of ammonia but in its presence produced the complex (2). The molecular and crystal structure;of [Ni(DSAL PTX)] exhibits a very unusual deployment of the six donor sites of the ligand. It crystallises in the orthorhombic system with space group P2(1)2(1)2(1). In dichloromethane solution both the complexes are found to exhibit Ni(II)/Ni(III) redox couples in their cyclic voltammograms at room temperature with E-1/2 values 0.87 and 0.78 V (vs. Ag/AgCl). (C) 1998 Elsevier Science Ltd. All rights reserved.
Synthesis, spectroscopic and redox behaviour of copper(II), nickel(II) and cobalt(II) complexes of some macrocyclic multidentates
作者:PR. Athappan、G. Rajagopal
DOI:10.1016/0277-5387(95)00182-r
日期:1996.2
Copper(II) complexes of neutral tetradentate diamines and a series of copper(II), nickel(II) and cobalt(II) complexes of a new class of dibasic hexadentate Schiff bases, derived from the above diamines and salicylaldehyde or 2-hydroxy-1-naphthaldehyde, have been prepared and characterized by elemental analysis, magnetic susceptibility and IR and electronic spectral studies. The electrochemical behaviour
中性四齿二胺的铜(II)配合物,以及由上述二胺和水杨醛或2-羟基-苯胺衍生的新型二元六齿席夫碱的一系列铜(II),镍(II)和钴(II)配合物已经制备了1-萘醛,并通过元素分析,磁化率以及红外光谱和电子光谱研究对其进行了表征。还研究了铜(II)和钴(II)配合物的电化学行为以及所有铜(II)配合物的ESR光谱参数。配体场强随螯合物环尺寸从六增加到七而增加。ESR光谱数据表明,铜(II)配合物呈现单体扭曲的八面体或拟四面体结构。乙腈中的II / Cu I和Co II / Co I对。