Synthesis, Structural Characterization And Anticancer Studies Of Asymmetrical And Symmetrical Dinuclear Silver(I) Di-nheterocyclic Carbene Complexes
This thesis presents the synthesis, structural characterization, and anticancer studies of asymmetrical and symmetrical dinuclear silver(I) di-N-heterocyclic carbene (NHC) complexes which are mainly derived from bis- and tetrakis-benzimidazolium salts. The asymmetrical bis-benzimidazolium salts w...
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| Format: | Thesis |
| Language: | English |
| Published: |
2022
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| Subjects: | |
| Online Access: | http://eprints.usm.my/61038/1/MUHAMMAD%20ZULHELMI%20BIN%20NAZRI%20-%20TESIS24.pdf |
| _version_ | 1825908397352943616 |
|---|---|
| author | Nazri, Muhammad Zulhelmi |
| author_facet | Nazri, Muhammad Zulhelmi |
| author_sort | Nazri, Muhammad Zulhelmi |
| collection | USM |
| description | This thesis presents the synthesis, structural characterization, and anticancer
studies of asymmetrical and symmetrical dinuclear silver(I) di-N-heterocyclic carbene
(NHC) complexes which are mainly derived from bis- and tetrakis-benzimidazolium
salts. The asymmetrical bis-benzimidazolium salts were prepared in two different
substituents series comprising N-(2-bromoethyl)-N’-benzylbenzimidazolium bromide
with R-alkyl group (R = CH3, C2H5, C3H7, C4H9, C5H11 and C6H13) (1‧Br – 6‧Br) as the
first series and R-aryl group (R = 2-CN, 3-CN and 4-CN) (7‧Br – 15‧PF6) as the second
series consisting of ethylene, propylene and butylene bridges, respectively. As for the
symmetrical tetrakis-imidazolium salt was comprised reaction of 1,2,4,5-
tetrakis(bromomethyl)benzene with imidazole moiety of 16‧Br. All the asymmetry
bis-benzimidazolium and symmetry tetrakis-imidazolium salts were converted into
their respective complexes by in-situ deprotonation reaction with Ag2O by varying the
salt and metal molar ratio, thus resulting the formation of dinuclear silver(I) di-NHC
complexes (Ag1 – Ag16). The structures of the bis-benzimidazolium (1‧Br – 15‧PF6),
tetrakis-imidazolium (16‧Br) salts as well as Ag(I) di-NHC complexes (Ag1 – Ag16)
were characterized by combination of spectroscopic data (FTIR, 1H- and 13C-NMR),
CHN elemental analysis and single crystal X-ray diffraction technique. The single
crystal X-ray diffraction studies of complex Ag4 suggest the complex crystallized in
orthorhombic space group while the macrocyclic complex of Ag16 has cylinder-type
structure. |
| first_indexed | 2024-09-25T03:57:49Z |
| format | Thesis |
| id | usm.eprints-61038 |
| institution | Universiti Sains Malaysia |
| language | English |
| last_indexed | 2024-09-25T03:57:49Z |
| publishDate | 2022 |
| record_format | dspace |
| spelling | usm.eprints-610382024-08-26T07:51:03Z http://eprints.usm.my/61038/ Synthesis, Structural Characterization And Anticancer Studies Of Asymmetrical And Symmetrical Dinuclear Silver(I) Di-nheterocyclic Carbene Complexes Nazri, Muhammad Zulhelmi QD1-999 Chemistry This thesis presents the synthesis, structural characterization, and anticancer studies of asymmetrical and symmetrical dinuclear silver(I) di-N-heterocyclic carbene (NHC) complexes which are mainly derived from bis- and tetrakis-benzimidazolium salts. The asymmetrical bis-benzimidazolium salts were prepared in two different substituents series comprising N-(2-bromoethyl)-N’-benzylbenzimidazolium bromide with R-alkyl group (R = CH3, C2H5, C3H7, C4H9, C5H11 and C6H13) (1‧Br – 6‧Br) as the first series and R-aryl group (R = 2-CN, 3-CN and 4-CN) (7‧Br – 15‧PF6) as the second series consisting of ethylene, propylene and butylene bridges, respectively. As for the symmetrical tetrakis-imidazolium salt was comprised reaction of 1,2,4,5- tetrakis(bromomethyl)benzene with imidazole moiety of 16‧Br. All the asymmetry bis-benzimidazolium and symmetry tetrakis-imidazolium salts were converted into their respective complexes by in-situ deprotonation reaction with Ag2O by varying the salt and metal molar ratio, thus resulting the formation of dinuclear silver(I) di-NHC complexes (Ag1 – Ag16). The structures of the bis-benzimidazolium (1‧Br – 15‧PF6), tetrakis-imidazolium (16‧Br) salts as well as Ag(I) di-NHC complexes (Ag1 – Ag16) were characterized by combination of spectroscopic data (FTIR, 1H- and 13C-NMR), CHN elemental analysis and single crystal X-ray diffraction technique. The single crystal X-ray diffraction studies of complex Ag4 suggest the complex crystallized in orthorhombic space group while the macrocyclic complex of Ag16 has cylinder-type structure. 2022-03 Thesis NonPeerReviewed application/pdf en http://eprints.usm.my/61038/1/MUHAMMAD%20ZULHELMI%20BIN%20NAZRI%20-%20TESIS24.pdf Nazri, Muhammad Zulhelmi (2022) Synthesis, Structural Characterization And Anticancer Studies Of Asymmetrical And Symmetrical Dinuclear Silver(I) Di-nheterocyclic Carbene Complexes. Masters thesis, Universiti Sains Malaysia. |
| spellingShingle | QD1-999 Chemistry Nazri, Muhammad Zulhelmi Synthesis, Structural Characterization And Anticancer Studies Of Asymmetrical And Symmetrical Dinuclear Silver(I) Di-nheterocyclic Carbene Complexes |
| title | Synthesis, Structural Characterization And Anticancer
Studies Of Asymmetrical And Symmetrical Dinuclear Silver(I) Di-nheterocyclic Carbene Complexes |
| title_full | Synthesis, Structural Characterization And Anticancer
Studies Of Asymmetrical And Symmetrical Dinuclear Silver(I) Di-nheterocyclic Carbene Complexes |
| title_fullStr | Synthesis, Structural Characterization And Anticancer
Studies Of Asymmetrical And Symmetrical Dinuclear Silver(I) Di-nheterocyclic Carbene Complexes |
| title_full_unstemmed | Synthesis, Structural Characterization And Anticancer
Studies Of Asymmetrical And Symmetrical Dinuclear Silver(I) Di-nheterocyclic Carbene Complexes |
| title_short | Synthesis, Structural Characterization And Anticancer
Studies Of Asymmetrical And Symmetrical Dinuclear Silver(I) Di-nheterocyclic Carbene Complexes |
| title_sort | synthesis structural characterization and anticancer studies of asymmetrical and symmetrical dinuclear silver i di nheterocyclic carbene complexes |
| topic | QD1-999 Chemistry |
| url | http://eprints.usm.my/61038/1/MUHAMMAD%20ZULHELMI%20BIN%20NAZRI%20-%20TESIS24.pdf |
| work_keys_str_mv | AT nazrimuhammadzulhelmi synthesisstructuralcharacterizationandanticancerstudiesofasymmetricalandsymmetricaldinuclearsilveridinheterocycliccarbenecomplexes |