Titration calorimetric investigation of interactions of zinc(II), nickel(II), and copper(II) tetraphenylporphine complexes with pyridine in three solvents

被引：23
作者：
Zielenkiewicz, W
Lebedeva, NS
Antina, EV
Vyugin, AI
Kaminski, M
机构：
[1] Polish Acad Sci, Inst Phys Chem, PL-01224 Warsaw, Poland
[2] Russian Acad Sci, Inst Solut Chem, Ivanovo 153045, Russia
来源：
JOURNAL OF SOLUTION CHEMISTRY | 1998年 / 27卷 / 10期
关键词：
titration calorimetry; complexation; thermochemistry of metalloporphyrins; pyridine;
D O I：
10.1023/A:1022655010943
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Titration calorimetry was used in a thermodynamic study on the interactions of pyridine (Py) with zinc(II)-tetraphenylporphine (ZnTPP), nickel(II)-tetraphenylporphine (NiTPP), and copper(II)-tetraphenylporphine (CuTPP) in benzene, chloroform, and carbon tetrachloride solutions. The coordinating properties of the metalloporphyrins in relation to pyridine were found to diminish in the order ZnTPP > CuTPP > NiTPP. Solvation effects were estimated from the interactions between metalloporphyrins (MP) and Py. The more negative values of the enthalpy and entropy of reaction of ZnTPP with Py, following the order of solvents CCl4 > C6H6 > CHCl3, was found to be related to the different types of (MP-solvent) and (Py-solvent) interactions. The NiTPP and CuTPP complexes showed the opposite trend.
引用
收藏
页码：879 / 886
页数：8
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