Spectroscopic and Solution Studies of Some Transition Metal Complexes of New 4-Hydroxy Coumarin Semi- and Thiosemicarbazone Complexes
作者:Aisha I. Mosa、Mohamed M. Ibrahim、Sharah A. Aldhlmani
DOI:10.1007/s10953-013-0108-5
日期:2013.12
and used for the preparation of a series of transition metal complexes (Cr3+, Co2+, Ni2+, Cu2+, and Fe3+), derived from these ligands. These complexes have the forms [ML1Cl2]·nX (1–5) and [ML2Cl]·nX (6–9) (X = H2O or ethanol). The structures of these complexes were elucidated by elemental analyses, IR, UV–Vis, and electrical conductivity, as well as magnetic susceptibility measurements and thermal analyses
合成了两个新的配体,4-羟基香豆素-3-氨基硫脲(H2L1)和4-羟基香豆素-3-氨基脲(H2L2),并用于制备一系列过渡金属配合物(Cr3+、Co2+、Ni2+、Cu2+、和 Fe3+),衍生自这些配体。这些配合物的形式为 [ML1Cl2]·nX (1-5) 和 [ML2Cl]·nX (6-9)(X = H2O 或乙醇)。这些配合物的结构通过元素分析、IR、UV-Vis 和电导率,以及磁化率测量和热分析来阐明。红外光谱数据表明,在所有配合物中,配体作为一元三齿,通过酮氧或硫、偶氮甲碱氮和去质子化酚氧原子配位。在其他理化研究的基础上,四面体或方形平面几何形状被指定为单体结构中的 Cu2+ 配合物。在 Co2+、Ni2+ 和 Fe3+ 配合物的情况下,建议采用单体结构中的八面体立体化学。配体的解离常数及其 Cu(II)、Co(II)、Ni(II) 和 Fe(III) 配合物的稳定性常数也已在二恶烷:H2O