Synthesis and characterization of some schiff bases and their metal complexes
Dissertant
Thesis advisor
Muhammad, Muhammad Abd al-Karim
Fadul, Muhammad Himmat
al-Ajaily, Mari M.
University
Omdurman Islamic University
Faculty
Faculty of Sciences and Technology
Department
Department of Chemistry
University Country
Sudan
Degree
Ph.D.
Degree Date
2012
English Abstract
The Schiff bases derived from diamine and 2-hydroxyacetophenone were synthesized and investigated by using several physical techniques, in particular; CHN elemental analysis, infrared, proton nuclear magnetic resonance, ultraviolet and mass spectroscopy.
Only one product (Schiff bese) was formed from the reaction of the carbonyl function with the primary amine.
The formation of the targeted molecules was confirmed by the above mentioned tools, and their purity was confirmed by TLC technique.
The Schiff bases were reacted with Co (II), Ni (II), Cu (II), Cr (III) and La (III) to form the corresponding complexes.
The synthesized complexes were subjected to CHN elemental analysis, molar conductivity, thermogravimetric analysis, magnetic moment, infrared, electronic and electron paramagnetic resonance spectra.
The obtained data show formation of Schiff base complexes in 1 : 1 and 1: 2 ( M : L) ratios.
Where, L1 represents (C18 H20 N2 O2), L2 is (C20 H24 N2 O2) (C20 H24 N2 O2), L3 is (C22 H28 N2 O2) (C22 H28 N2 O2), L4 is (C22 H20 N2 O2)and L5 is (C16 H16 N2 O2).
The molar conductance measurements of the synthesized complexes reveal a non-electrolytic nature.
The obtained magnetic moment values exhibit the existence of diamagnetic phenomena for the La (III) complexes, and paramagnetic character for the other complexes.
The thermogravimetry analysis data of some complexes show the presence of water molecules during the formation of complexes.
The infrared spectral data display the coordination behavior of the Schiff bases toward the metal ions.
The UV-Vis spectral results of the Schiff bases and their complexes show π→π* (phenyl ring), n→π* (HC = N) transitions.
On the basis of the electron paramagnetic resonance spectral data, an octahedral structure was suggested for all the complexes.
The Synthesized Schiff bases and their complexes were evaluated for their antibacterial potential against some standard human pathogens (Escherichia coli,Proteus Sp, Pseudomonas aeruginosa and Staphylococcusaureus).
Most of the complexes revealed promising antibacterial activity, and they could be sobjected to further optimization.
Main Subjects
No. of Pages
141
Table of Contents
Table of contents.
Abstract.
Chapter One : Introduction.
Chapter Two : Materials and methods.
Chapter Three : Studies on the Schiff bases.
References.
American Psychological Association (APA)
Hamil, Abd al-Salam Matuq Ali. (2012). Synthesis and characterization of some schiff bases and their metal complexes. (Doctoral dissertations Theses and Dissertations Master). Omdurman Islamic University, Sudan
https://search.emarefa.net/detail/BIM-393734
Modern Language Association (MLA)
Hamil, Abd al-Salam Matuq Ali. Synthesis and characterization of some schiff bases and their metal complexes. (Doctoral dissertations Theses and Dissertations Master). Omdurman Islamic University. (2012).
https://search.emarefa.net/detail/BIM-393734
American Medical Association (AMA)
Hamil, Abd al-Salam Matuq Ali. (2012). Synthesis and characterization of some schiff bases and their metal complexes. (Doctoral dissertations Theses and Dissertations Master). Omdurman Islamic University, Sudan
https://search.emarefa.net/detail/BIM-393734
Language
English
Data Type
Arab Theses
Record ID
BIM-393734
