Synthesis and conductance study of ammonium and metal ion complexes with several crown ethers in acetonitrile

العناوين الأخرى

تحضير مركبات جديدة من ثياداميدودايبنزوالااثيرات التاجية و دراسة الايصالية الكهربائية لمعقدات بعض مركبات الاثير التاجية مع أيون الامونيوم و بعض العناصر الانتقالية في مذيب الاسيتونيترايل

مقدم أطروحة جامعية

al-Rubayhat, Muhammad Ratib

مشرف أطروحة جامعية

al-Ashram, Muhammad Hasan

أعضاء اللجنة

Mazid, Shihadah Abd al-Rahman
al-Mahasinah, Ali Shakir
al-Umari, Hamzah Salih

الجامعة

جامعة مؤتة

الكلية

كلية العلوم

القسم الأكاديمي

قسم الكيمياء

دولة الجامعة

الأردن

الدرجة العلمية

ماجستير

تاريخ الدرجة العلمية

2008

الملخص الإنجليزي

Three new thiadiamidoerown ethers 19, 20, and 21 have been synthesized in a simple way and high yields.

These crown ethers were characterized by H-NMR, C-NMR and Mass spectrometry.

A Thermodynamic study of the complication of pb2+ and Ag+ ions with 19, Hg2+, pb2+ and Ag+ with 20, Ag+ with 21and pb2+ with both 22 and 23 in acetonitrile, has been carried out.

The study was conducted in the temperature range 288-308 K using a conduct metric technique in acetonitrile.

The observed molar conductivities, A, were found to decrease significantly for mole ratios [L] t / [M]t about unity.

A model involving 1:1 stoichiometry has been used to analyze the conductivity data.

The stability constant, K, for each 1:1 complex was determined from the conductivity data by using a nonlinear least squares curve fitting procedure.

The values of standard enthalpy change (AH0) and entropy change (AS°) for the complication reactions were evaluated from the slopes and intercepts of the van's Hoff plots respectively.

Standard Gibbs free energy change values (AG0) were calculated from the relationship AG° = AH0- T AS0.

The stability of the complexes of 19 and 20 are as follow : l-Ag+>pb2 + forl9.

2-Hg2 + >Ag + >pb2 + for20.

التخصصات الرئيسية

الكيمياء

الموضوعات

عدد الصفحات

53

قائمة المحتويات

Table of contents.

Abstract.

Chapter one : Introduction.

Chapter two : Results and discussion.

Chapter three : Experimental.

Chapter four : Summary and recommendation.

References.

نمط استشهاد جمعية علماء النفس الأمريكية (APA)

al-Rubayhat, Muhammad Ratib. (2008). Synthesis and conductance study of ammonium and metal ion complexes with several crown ethers in acetonitrile. (Master's theses Theses and Dissertations Master). Mutah University, Jordan
https://search.emarefa.net/detail/BIM-304520

نمط استشهاد الجمعية الأمريكية للغات الحديثة (MLA)

al-Rubayhat, Muhammad Ratib. Synthesis and conductance study of ammonium and metal ion complexes with several crown ethers in acetonitrile. (Master's theses Theses and Dissertations Master). Mutah University. (2008).
https://search.emarefa.net/detail/BIM-304520

نمط استشهاد الجمعية الطبية الأمريكية (AMA)

al-Rubayhat, Muhammad Ratib. (2008). Synthesis and conductance study of ammonium and metal ion complexes with several crown ethers in acetonitrile. (Master's theses Theses and Dissertations Master). Mutah University, Jordan
https://search.emarefa.net/detail/BIM-304520

لغة النص

الإنجليزية

نوع البيانات

رسائل جامعية

رقم السجل

BIM-304520