Synthesis, characterization and antibacterial screening of new benzoylthiourea derivatives and their Cu(II) and Ni(II) complexes / Nur Illane Mohamad Halim
Three new mono-thiourea ligands namely 7V-(2-methoxybenzoyl)-JV-(4- diphenylamino)thiourea (Tl), A^-(3-methoxybenzoyl)-jV-(4-diphenylamino)thiourea (T2) and A^-(4-methoxybenzoyl)-A^-(4-diphenylamino)thiourea (T3) have been successfully synthesized and characterized by elemental analysis (CHNS), infr...
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my-uitm-ir.203632022-11-30T07:06:53Z Synthesis, characterization and antibacterial screening of new benzoylthiourea derivatives and their Cu(II) and Ni(II) complexes / Nur Illane Mohamad Halim 2013 Mohamad Halim, Nur Illane Organic chemistry Antibiotic therapy. Antibiotics Three new mono-thiourea ligands namely 7V-(2-methoxybenzoyl)-JV-(4- diphenylamino)thiourea (Tl), A^-(3-methoxybenzoyl)-jV-(4-diphenylamino)thiourea (T2) and A^-(4-methoxybenzoyl)-A^-(4-diphenylamino)thiourea (T3) have been successfully synthesized and characterized by elemental analysis (CHNS), infrared, H and C NMR and UV-Vis spectroscopic techniques. The structure of Tl was determined by single crystal X-ray diffraction method and crystallized in the monoclinic system, space group P2(l)/c, with , a = 7.2647 (13) A, b = 20.478 (4) A, c = 12.687 (2) A, p = 101.015 (4) °, F= 1852.6 (6) A3, Z = 4. The thiourea moiety maintains it cis-trans geometry causing the molecule to be non-planar. The N2-C9 bond length of 1.326(2)A is shorter than N1-C9 (1.400(3)A) indicating a double bond character. Thus, the S1-C9-N2 thioamide is delocalized. A series of new bis-thiourea derivatives namely l,2-bis(AP-2-methoxybenzoyl-thioureido)-4-chlorobenzene (T4), 1,2-bis(Ar-3-methoxybenzoylthioureido)-4-chloro-benzene (T5), 1,2-bis(iV-4- methoxybenzoylthioureido)-4-chlorobenzene (T6), 1,2-bis(JV-2-methoxybenzoylthioureido)-4-nitrobenzene (T7), 1,2-bis(Ar -3-methoxybenzoylthioureido)-4-nitrobenzene (T8) and l,2-bis(JVM-methoxybenzoylthioureido)-4-nitrobenzene (T9) has been successfully prepared. The Cu(II) and Ni(II) complexes of T4, T5 and T6 series are also isolated. The structure of the ligands and complexes are elucidated by elemental analysis (CHNS), infrared, !H and I3C NMR, UV-Vis spectroscopic and magnetic susceptibility determination method. The Ni(II) complexes are suggested to have tetrahedral geometry. All the compounds were screened for their antibacterial activity using disc diffusion method against three Gram-positive bacteria {Bacillus subtillis ATCC 6633, Staphylococcus aureus ATCC 29213 and Lactobacillus casei ATCC 393) and three Gram-negative bacteria (Escherichia coli ATCC 25922, Pseudomonas aeruginosa ATCC 10145, and Shigella sonnei ATCC 9290). The results show that the antibacterial activity of the metal complexes is higher than the ligands. The copper(II) complexes are more active against bacteria than the nickel(II) complexes. 2013 Thesis https://ir.uitm.edu.my/id/eprint/20363/ https://ir.uitm.edu.my/id/eprint/20363/2/20363.pdf text en public mphil masters Universiti Teknologi MARA (UiTM) Faculty of Applied Sciences Kassim, Karimah |
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Kassim, Karimah |
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Organic chemistry Organic chemistry |
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Organic chemistry Organic chemistry Mohamad Halim, Nur Illane Synthesis, characterization and antibacterial screening of new benzoylthiourea derivatives and their Cu(II) and Ni(II) complexes / Nur Illane Mohamad Halim |
description |
Three new mono-thiourea ligands namely 7V-(2-methoxybenzoyl)-JV-(4- diphenylamino)thiourea (Tl), A^-(3-methoxybenzoyl)-jV-(4-diphenylamino)thiourea (T2) and A^-(4-methoxybenzoyl)-A^-(4-diphenylamino)thiourea (T3) have been successfully synthesized and characterized by elemental analysis (CHNS), infrared, H and C NMR and UV-Vis spectroscopic techniques. The structure of Tl was determined by single crystal X-ray diffraction method and crystallized in the monoclinic system, space group P2(l)/c, with , a = 7.2647 (13) A, b = 20.478 (4) A, c = 12.687 (2) A, p = 101.015 (4) °, F= 1852.6 (6) A3, Z = 4. The thiourea moiety maintains it cis-trans geometry causing the molecule to be non-planar. The N2-C9 bond length of 1.326(2)A is shorter than N1-C9 (1.400(3)A) indicating a double bond character. Thus, the S1-C9-N2 thioamide is delocalized. A series of new bis-thiourea derivatives namely l,2-bis(AP-2-methoxybenzoyl-thioureido)-4-chlorobenzene (T4), 1,2-bis(Ar-3-methoxybenzoylthioureido)-4-chloro-benzene (T5), 1,2-bis(iV-4- methoxybenzoylthioureido)-4-chlorobenzene (T6), 1,2-bis(JV-2-methoxybenzoylthioureido)-4-nitrobenzene (T7), 1,2-bis(Ar -3-methoxybenzoylthioureido)-4-nitrobenzene (T8) and l,2-bis(JVM-methoxybenzoylthioureido)-4-nitrobenzene (T9) has been successfully prepared. The Cu(II) and Ni(II) complexes of T4, T5 and T6 series are also isolated. The structure of the ligands and complexes are elucidated by elemental analysis (CHNS), infrared, !H and I3C NMR, UV-Vis spectroscopic and magnetic susceptibility determination method. The Ni(II) complexes are suggested to have tetrahedral geometry. All the compounds were screened for their antibacterial activity using disc diffusion method against three Gram-positive bacteria {Bacillus subtillis ATCC 6633, Staphylococcus aureus ATCC 29213 and Lactobacillus casei ATCC 393) and three Gram-negative bacteria (Escherichia coli ATCC 25922, Pseudomonas aeruginosa ATCC 10145, and Shigella sonnei ATCC 9290). The results show that the antibacterial activity of the metal complexes is higher than the ligands. The copper(II) complexes are more active against bacteria than the nickel(II) complexes. |
format |
Thesis |
qualification_name |
Master of Philosophy (M.Phil.) |
qualification_level |
Master's degree |
author |
Mohamad Halim, Nur Illane |
author_facet |
Mohamad Halim, Nur Illane |
author_sort |
Mohamad Halim, Nur Illane |
title |
Synthesis, characterization and antibacterial screening of new benzoylthiourea derivatives and their Cu(II) and Ni(II) complexes / Nur Illane Mohamad Halim |
title_short |
Synthesis, characterization and antibacterial screening of new benzoylthiourea derivatives and their Cu(II) and Ni(II) complexes / Nur Illane Mohamad Halim |
title_full |
Synthesis, characterization and antibacterial screening of new benzoylthiourea derivatives and their Cu(II) and Ni(II) complexes / Nur Illane Mohamad Halim |
title_fullStr |
Synthesis, characterization and antibacterial screening of new benzoylthiourea derivatives and their Cu(II) and Ni(II) complexes / Nur Illane Mohamad Halim |
title_full_unstemmed |
Synthesis, characterization and antibacterial screening of new benzoylthiourea derivatives and their Cu(II) and Ni(II) complexes / Nur Illane Mohamad Halim |
title_sort |
synthesis, characterization and antibacterial screening of new benzoylthiourea derivatives and their cu(ii) and ni(ii) complexes / nur illane mohamad halim |
granting_institution |
Universiti Teknologi MARA (UiTM) |
granting_department |
Faculty of Applied Sciences |
publishDate |
2013 |
url |
https://ir.uitm.edu.my/id/eprint/20363/2/20363.pdf |
_version_ |
1783733726293786624 |