...
首页> 外文期刊>Spectrochimica acta, Part A. Molecular and biomolecular spectroscopy >Spectroscopic studies of charge transfer complexes between colchicine and some pi acceptors
【24h】

Spectroscopic studies of charge transfer complexes between colchicine and some pi acceptors

机译:秋水仙碱与某些π受体之间电荷转移配合物的光谱研究

获取原文
获取原文并翻译 | 示例
   

获取外文期刊封面封底 >>

       

摘要

Charge transfer complexes between colchicine as donor and pi acceptors such as tetracyanoethylene (TCNE), 2,3-dichloro-5,6-dicyano-p-benzoquinone (DDQ), p-chloranil (p-CHL) have been studied spectrophotometrically in dichloromethane at 21 degrees C. The stoichiometry of the complexes was found to be 1: 1 ratio by the Job method between donor and acceptors with the maximum absorption band at a wavelength of 535, 585 and 515 nm. The equilibrium constant and thermodynamic parameters of the complexes were determined by Benesi-Hildebrand and van't Hoff equations. Colchicine in pure form and in dosage form was applied in this study. The formation constants for the complexes were shown to be dependent on the structure of the electron acceptors used. (c) 2006 Elsevier B.V. All rights reserved.
机译:在二氯甲烷中用分光光度法研究了秋水仙碱作为供体与pi受体之间的电荷转移络合物,例如四氰基乙烯(TCNE),2,3-二氯-5,6-二氰基对苯醌(DDQ),对氯苯醌(p-CHL)。在21℃下,通过Job方法发现供体和受体之间的配合物的化学计量比为1:1。在535、585和515 nm波长处具有最大吸收带。络合物的平衡常数和热力学参数由Benesi-Hildebrand和van't Hoff方程确定。这项研究应用了纯形式和剂型秋水仙碱。配合物的形成常数显示取决于所用电子受体的结构。 (c)2006 Elsevier B.V.保留所有权利。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号