A thermodynamic study of the charge transfer complexes of C60 with some thiacrown ethers

Other Title(s)

[60] دراسة الديناميكا الحرارية للمعقدات الناتجة عن انتقال الشحنة بين الفلرين و بعض الإيثرات التاجية

Dissertant

al-Khalayifah, Khalid Muhammad

Thesis advisor

Mizyid, Shihadah A.
Ashram, Muhammad

University

Mutah University

Faculty

Faculty of Science

Department

Department of Chemistry

University Country

Jordan

Degree

Master

Degree Date

2012

English Abstract

The charge transfers complexation between [60]Fullerene and dibenzothiacrown ethers 1-3 and dibenzoazathiacrown ethers 4-6 were studied in toluene using UV/Vis spectrophotometry at five different temperatures.

The formation constants Kc were determined by applying the Benesi-Hildebrand equation. Complexes were found to have 1:1 stoichiometry as obtained by Job plots method and confirmed by mole ratio method.

The cavity size of crown moiety, the type, number and orientation of donor atoms effect on Kc values.

Also, the thermodynamic parameters: ΔHo, ΔSo and ΔGo were obtained for all complexes.

The complex formations for all systems are enthalpy favored, while the entropy is disfavored for compounds 1, 4 and 6 since their ΔSo values are negative.

Enthalpy-Entropy compensation effect was also observed.-

Main Subjects

Chemistry

No. of Pages

53

Table of Contents

• APA
• MLA
• AMA

Language

English

Data Type

Arab Theses

Record ID

BIM-786532