Synthesis and characterization of copper(II) complexes with a tridentate schiff base ligand derived from 5-chloro-2-hydroxyacetophenone and salicylhydrazide. X-ray structure of copper(II) (5-chloro-2-hydroxyacetophenone-salicylhydrazide) dimethylformamide
一系列新的混合配体oxidovanadium(的V)络合物[V V O(HL 1-4)(HQ)](1-4)使用2-羟基苯乙酮的2- hydroxybenzoylhydrazones和其5-取代的衍生物已被合成(H 3 L 1–4)以及8-羟基喹啉(Hhq)作为配体。通过元素分析,磁化率测量和各种光谱学方法对复合物进行表征。还报道了它们的电化学行为。1-4的X射线晶体学研究表明,对于四个配合物中的每一个,都存在具有O 4 N 2配位环境的扭曲的八面体几何形状。λ最大值为所述配体-金属-电荷转移(LMCT)过渡值, È ½值,化学位移参数( δ)为51的络合物第V NMR谱显示出与哈米特常数(具有线性关系σ的)取代基。DFT方法用于预测键长,键角, λ最大值的电子跃迁和δ的值51 V NMR谱,所有这些都认为是在与实验结果吻合良好。还检查了复合物的稳定性。所有复合物均通过小沟结合模式表现出与C
Spectroscopic properties and crystal structure of an oxovanadium(V) alkoxo complex with the ligand: 5-chloro-o-hydroxyacetophenone-salicyhydrazide
作者:María S. Palacios、María J. Rocío、Sixto Domínguez、Pedro Gili、Catalina Ruiz-Pérez、Fernando V. Rodríguez-Romero、Jean-Michel Dance
DOI:10.1016/s0277-5387(96)00375-0
日期:1997.1
The preparation and characterization by means of IR and electronic spectroscopies, magnetic measurements and molecular structure by X-ray diffraction of a single-crystal are reported for a monomeric oxovanadium(V) complex: [(VO)-O-v(5Cl-OHA-SHZ)(OCH2CH3)], where (5Cl-OHA-SHZ) is the dianionic tridentate ONO donor ligand 5-chloro-o-hydroxyacetophenone-salicylhydrazide. The vanadium atom is essentially five coordinate. Three ONO donor atoms of the (5Cl-OHA-SHZ) ligand and an oxygen atom from an alkoxide group form a distorted square-pyramidal geometry around the metal center. The basal coordination plane is formed by three donor atoms ONO (a phenolic oxygen, an imine nitrogen and an enolic oxygen) from the ligand and an oxygen atom from the alkoxide group. This structure is compared with the corresponding copper (II) complex with the same ligand. Copyright (C) 1997 Elsevier Science Ltd.
A family of amphiphilic dioxidovanadium(V) hydrazone complexes as potent carbonic anhydrase inhibitors along with anti-diabetic and cytotoxic activities
作者:Chiranjit Ghosh、Debashis Patra、Niranjan Bala、Indira Majumder、Nayim Sepay、Prabuddha Mukhopadhyay、Sukhen Das、Rita Kundu、Michael G. B. Drew、Armando Rafael León、Tapas Ghosh、Manik Pradhan