Asekunowo, Patrick O.
(2015)
Synthesis, Structure And Antimicrobial
Properties Of New Silver(I)- And
Palladium(Ii)-N-Heterocyclic Carbene
Complexes Derived From
[Benz]Imidazol-2-Ylidenes.
PhD thesis, Universiti Sains Malaysia.
Abstract
Tesis ini melaporkan sintesis, struktur dan ciri antimikrob pelbagai kompleks
argentum (I)- dan palladium(II)-NHC mengandungi ligan [benz]imidazolin-2-ilidena.
Hasil penemuan penyelidikan ini dibentangkan dalam empat bab. Dua jenis garam
[benz]imidazolium dengan gantian yang berlainan telah disediakan. Jenis yang
pertama ialah garam mono-[benz]imidazolium (1-15) yang berteraskan eter, nitril
dan alil. Kesemua garam mudah diubah dengan menggunakan gantian akil/akil aril
pada posisi ketiga pada gelang [benz]imidazolium. Manakala jenis yang kedua ialah
garam bis-[benz]imidazolium (16-25) terbitan sistem terangkai propil, piridina dan
para-xilena. Kompleks disediakan melalui tindakbalas in situ Ag2O dengan garam
[benz]imidazolium sepadan secara mempelbagaikan nisbah molar logam kepada
garam, menghasilkan dua puluh lima kompleks Ag(I)-NHC (26-50) yang baru.
This thesis reports the synthesis, structure and antimicrobial properties of various
silver(I)- and palladium(II)-NHC complexes bearing [benz]imidazolin-2-ylidene
ligands. The findings of the research are presented in four chapters. Two types of
[benz]imidazolium salts with different substituents were prepared. The first type is
mono-[benz]imidazolium salts (1-15) with ether, nitrile and allyl functionalities.
They are conveniently tuned, using different alkyl/alkyl aryl substituents at the 3-
position of the [benz]imidazolium ring. While the second type is bis-
[benz]imidazolium salts (16-25) derived from propyl, pyridine and para-xylene
linked systems. The complexes were prepared by in situ reaction of Ag2O with the
corresponding [benz]imidazolium salts by varying the metal to salt molar ratio,
resulting in the isolation of twenty five new Ag(I)-NHC complexes (26-50).
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