Vanadyl Binary Schiff Base Complexes Containing N<sub>2</sub>O<sub>2</sub>Coordination Sphere: Synthesis, Ab Initio Calculations and Thermodynamic Properties
作者:Mozaffar Asadi、Mohammad Hadi Ghatee、Susan Torabi、Khosro Mohammadi、Fatemeh Moosavi
DOI:10.5012/jkcs.2013.57.1.63
日期:2013.2.20
Some vanadyl complexes were synthesized by treating a methanolic solution of the appropriate Schiff base ligand and one equivalent of $VO(SO_4)_2$ to yield [($VOL_2^1-14}$)](L=Salicylaldehyde's derivatives, Schemes 1, 2). These oxovanadium (IV) complexes were characterized based on their FT-IR, UV-Vis spectroscopy and elemental analysis. The IR spectra suggest that coordination takes place through azomethine nitrogen and phenolate oxygen. In addition, the formation constants of the oxovanadium (IV) binary complexes were determined in methanolic medium. The ab initio calculations were also carried out to determine the structural and the geometrical properties of one of the complexes and its calculated vibrational frequencies were investigated.
一些钒氧配合物是通过将适当的水杨醛衍生物希夫碱配体和等量的$VO(SO_4)_2$溶于甲醇溶液中合成的,生成[(VOL_2^1-14})](L=水杨醛衍生物,方案1、2)。这些四价氧化钒配合物根据其FT-IR、UV-Vis光谱和元素分析进行了表征。红外光谱表明配位通过偶氮甲碱氮和酚氧发生。此外,四价氧化钒二元配合物在甲醇介质中的形成常数也被测定。还进行了从头计算,以确定其中一个配合物的结构和几何性质及其计算的振动频率。