Shafaatian Bita, Ozbakzaei Zahra, Notash Behrouz, Rezvani S Ahmad
School of Chemistry, Damghan University, Damghan 3671641167, Iran.
School of Chemistry, Damghan University, Damghan 3671641167, Iran.
Spectrochim Acta A Mol Biomol Spectrosc. 2015 Apr 5;140:248-55. doi: 10.1016/j.saa.2014.11.108. Epub 2014 Dec 25.
A series of new bimetallic complexes of nickel(II) and vanadium(IV) have been synthesized by the reaction of the new double bidentate Schiff base ligands with nickel acetate and vanadyl acetylacetonate in 1:1 M ratio. In nickel and also vanadyl complexes the ligands were coordinated to the metals via the imine N and enolic O atoms. The complexes have been found to possess 1:1 metals to ligands stoichiometry and the molar conductance data revealed that the metal complexes were non-electrolytes. The nickel and vanadyl complexes exhibited distorted square planar and square pyramidal coordination geometries, respectively. The emission spectra of the ligands and their complexes were studied in methanol. Electrochemical properties of the ligands and their metal complexes were also investigated in DMSO solvent at 150 mV s(-1) scan rate. The ligands and metal complexes showed both quasi-reversible and irreversible processes at this scan rate. The Schiff bases and their complexes have been characterized by FT-IR, 1H NMR, UV/Vis spectroscopies, elemental analysis and conductometry. The crystal structure of the nickel complex has been determined by single crystal X-ray diffraction.
通过新型双齿席夫碱配体与乙酸镍和乙酰丙酮氧钒以1:1摩尔比反应，合成了一系列新型镍（II）和钒（IV）双金属配合物。在镍配合物和氧钒配合物中，配体均通过亚胺氮原子和烯醇式氧原子与金属配位。已发现这些配合物的金属与配体化学计量比为1:1，摩尔电导率数据表明金属配合物为非电解质。镍配合物和氧钒配合物分别呈现扭曲的平面正方形和四方锥配位几何构型。在甲醇中研究了配体及其配合物的发射光谱。还在二甲基亚砜溶剂中以150 mV s⁻¹扫描速率研究了配体及其金属配合物的电化学性质。在此扫描速率下，配体和金属配合物均显示出准可逆和不可逆过程。通过傅里叶变换红外光谱、¹H核磁共振光谱、紫外/可见光谱、元素分析和电导率测定对席夫碱及其配合物进行了表征。通过单晶X射线衍射确定了镍配合物的晶体结构。
