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Synthesis, characterization and antioxidant activities of ni(ii) cu(ii), and zn(ii) complexes of substituted 4-phenyl-1,3,5-triazine-2,6- salicylaldimine / Abdulaziz Ali Alomari

Six new Schiff bases were prepared from the reaction of 4-phenyl-1,3,5-triazine-2,6-diamine with 5-chlorosalicyladehyde, 5-bromosalicyladehyde, 5-nitrosalicyladehyde, 3-hydroxysalicyladehyde, 4-hydroxysalicyladehyde, and 3,5-di-tert-butylsalicyladehyde. Each of these Schiff bases were then reacted w...

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Main Author: Alomari, Abdulaziz Ali
Format: Thesis
Published: 2012
Subjects:
Q Science (General)
QD Chemistry
Online Access:http://studentsrepo.um.edu.my/5796/3/A%2D_Title_outside.pdf
http://studentsrepo.um.edu.my/5796/10/B%2DTitle_inside.pdf
http://studentsrepo.um.edu.my/5796/12/D%2DAcknowledgment.pdf
http://studentsrepo.um.edu.my/5796/13/E%2DAbstract_%2Dphd.pdf
http://studentsrepo.um.edu.my/5796/14/F%2DAbstrak%2DPhD.pdf
http://studentsrepo.um.edu.my/5796/15/G%2DList_of_figures.pdf
http://studentsrepo.um.edu.my/5796/16/H%2DList_of_tables.pdf
http://studentsrepo.um.edu.my/5796/11/C%2DContents.pdf
http://studentsrepo.um.edu.my/5796/17/I%2DChapter_1_introd._final.pdf
http://studentsrepo.um.edu.my/5796/18/J%2DChapter2liter__ature_review.final.pdf
http://studentsrepo.um.edu.my/5796/2/K%2DChapter_3_Experimental_%2D_final.pdf
http://studentsrepo.um.edu.my/5796/20/L%2DH2L1%2D_H2L2_%2DH2L3_%2D_final.pdf
http://studentsrepo.um.edu.my/5796/21/Lz%2DH2L4_%2DH2L5_%2D_H2L6_final.pdf
http://studentsrepo.um.edu.my/5796/22/M%2DChapter_5_Antioxidant_activities.pdf
http://studentsrepo.um.edu.my/5796/23/N%2DChapter_6_Conclusions.pdf
http://studentsrepo.um.edu.my/5796/24/O%2DREFERENCES.pdf
http://studentsrepo.um.edu.my/5796/4/APPENDIX_1.pdf
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http://studentsrepo.um.edu.my/5796/7/APPENDIX_4.pdf
http://studentsrepo.um.edu.my/5796/8/APPENDIX_5.pdf
http://studentsrepo.um.edu.my/5796/9/APPENDIX_6.pdf
http://studentsrepo.um.edu.my/5796/1/055%2D12743_(173.pdf
http://studentsrepo.um.edu.my/5796/25/paper_2.pdf
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spelling my.um.stud.57962015-10-28T10:09:46Z Synthesis, characterization and antioxidant activities of ni(ii) cu(ii), and zn(ii) complexes of substituted 4-phenyl-1,3,5-triazine-2,6- salicylaldimine / Abdulaziz Ali Alomari Alomari, Abdulaziz Ali Q Science (General) QD Chemistry Six new Schiff bases were prepared from the reaction of 4-phenyl-1,3,5-triazine-2,6-diamine with 5-chlorosalicyladehyde, 5-bromosalicyladehyde, 5-nitrosalicyladehyde, 3-hydroxysalicyladehyde, 4-hydroxysalicyladehyde, and 3,5-di-tert-butylsalicyladehyde. Each of these Schiff bases were then reacted with Ni(II), Cu(II), and Zn(II) acetates to the corresponding complexes (total 18). The Schiff bases were characterized by elemental analysis (CHN), Fourier transform infrared spectroscopy (FT-IR), 1H- and 13C- nuclear magnetic resonance spectroscopy (NMR), ultraviolet-visible spectroscopy (UV-vis), while the complexes were additionally characterized by CHN, FT-IR, UV-vis and thermogravimetric analysis (TGA). All Ni(II) complexes are octahedral, all Cu(II) complexes are square pyramidal, and all Zn(II) complexes are tetrahedral. The thermal stabilities of Ni(II) and Cu(II) complexes of H2L1, H2L2, H2L3 and H2L6 are similar (245-255oC), but slightly higher than those of the corresponding Zn(II) complexes (225-230oC), and significantly higher than those of H2L4 and H2L5 (200-210oC). The antioxidant activities of the Schiff bases and their complexes were measured in terms of their radical scavenging ability towards diphenylpicrylhydrazyl free radical (DPPH) and ferric reducing ability power (FRAP). All of the Schiff bases studied have higher antioxidant activities compared to the corresponding complexes. The Schiff bases with the highest antioxidant activities are H2L4 and H2L5, while the complexes with the highest antioxidant activities are NiL4 and NiL5. The antioxidant activities increase with concentration of the compounds. 2012 Thesis NonPeerReviewed application/pdf http://studentsrepo.um.edu.my/5796/3/A%2D_Title_outside.pdf application/pdf http://studentsrepo.um.edu.my/5796/10/B%2DTitle_inside.pdf application/pdf http://studentsrepo.um.edu.my/5796/12/D%2DAcknowledgment.pdf application/pdf http://studentsrepo.um.edu.my/5796/13/E%2DAbstract_%2Dphd.pdf application/pdf http://studentsrepo.um.edu.my/5796/14/F%2DAbstrak%2DPhD.pdf application/pdf http://studentsrepo.um.edu.my/5796/15/G%2DList_of_figures.pdf application/pdf http://studentsrepo.um.edu.my/5796/16/H%2DList_of_tables.pdf application/pdf http://studentsrepo.um.edu.my/5796/11/C%2DContents.pdf application/pdf http://studentsrepo.um.edu.my/5796/17/I%2DChapter_1_introd._final.pdf application/pdf http://studentsrepo.um.edu.my/5796/18/J%2DChapter2liter__ature_review.final.pdf application/pdf http://studentsrepo.um.edu.my/5796/2/K%2DChapter_3_Experimental_%2D_final.pdf application/pdf http://studentsrepo.um.edu.my/5796/20/L%2DH2L1%2D_H2L2_%2DH2L3_%2D_final.pdf application/pdf http://studentsrepo.um.edu.my/5796/21/Lz%2DH2L4_%2DH2L5_%2D_H2L6_final.pdf application/pdf http://studentsrepo.um.edu.my/5796/22/M%2DChapter_5_Antioxidant_activities.pdf application/pdf http://studentsrepo.um.edu.my/5796/23/N%2DChapter_6_Conclusions.pdf application/pdf http://studentsrepo.um.edu.my/5796/24/O%2DREFERENCES.pdf application/pdf http://studentsrepo.um.edu.my/5796/4/APPENDIX_1.pdf application/pdf http://studentsrepo.um.edu.my/5796/5/APPENDIX_2.pdf application/pdf http://studentsrepo.um.edu.my/5796/6/APPENDIX_3.pdf application/pdf http://studentsrepo.um.edu.my/5796/7/APPENDIX_4.pdf application/pdf http://studentsrepo.um.edu.my/5796/8/APPENDIX_5.pdf application/pdf http://studentsrepo.um.edu.my/5796/9/APPENDIX_6.pdf application/pdf http://studentsrepo.um.edu.my/5796/1/055%2D12743_(173.pdf application/pdf http://studentsrepo.um.edu.my/5796/25/paper_2.pdf Alomari, Abdulaziz Ali (2012) Synthesis, characterization and antioxidant activities of ni(ii) cu(ii), and zn(ii) complexes of substituted 4-phenyl-1,3,5-triazine-2,6- salicylaldimine / Abdulaziz Ali Alomari. PhD thesis, University of Malaya. http://studentsrepo.um.edu.my/5796/
institution Universiti Malaya
building UM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Malaya
content_source UM Student Repository
url_provider http://studentsrepo.um.edu.my/
topic Q Science (General)
QD Chemistry
spellingShingle Q Science (General)
QD Chemistry
Alomari, Abdulaziz Ali
Synthesis, characterization and antioxidant activities of ni(ii) cu(ii), and zn(ii) complexes of substituted 4-phenyl-1,3,5-triazine-2,6- salicylaldimine / Abdulaziz Ali Alomari
description Six new Schiff bases were prepared from the reaction of 4-phenyl-1,3,5-triazine-2,6-diamine with 5-chlorosalicyladehyde, 5-bromosalicyladehyde, 5-nitrosalicyladehyde, 3-hydroxysalicyladehyde, 4-hydroxysalicyladehyde, and 3,5-di-tert-butylsalicyladehyde. Each of these Schiff bases were then reacted with Ni(II), Cu(II), and Zn(II) acetates to the corresponding complexes (total 18). The Schiff bases were characterized by elemental analysis (CHN), Fourier transform infrared spectroscopy (FT-IR), 1H- and 13C- nuclear magnetic resonance spectroscopy (NMR), ultraviolet-visible spectroscopy (UV-vis), while the complexes were additionally characterized by CHN, FT-IR, UV-vis and thermogravimetric analysis (TGA). All Ni(II) complexes are octahedral, all Cu(II) complexes are square pyramidal, and all Zn(II) complexes are tetrahedral. The thermal stabilities of Ni(II) and Cu(II) complexes of H2L1, H2L2, H2L3 and H2L6 are similar (245-255oC), but slightly higher than those of the corresponding Zn(II) complexes (225-230oC), and significantly higher than those of H2L4 and H2L5 (200-210oC). The antioxidant activities of the Schiff bases and their complexes were measured in terms of their radical scavenging ability towards diphenylpicrylhydrazyl free radical (DPPH) and ferric reducing ability power (FRAP). All of the Schiff bases studied have higher antioxidant activities compared to the corresponding complexes. The Schiff bases with the highest antioxidant activities are H2L4 and H2L5, while the complexes with the highest antioxidant activities are NiL4 and NiL5. The antioxidant activities increase with concentration of the compounds.
format Thesis
author Alomari, Abdulaziz Ali
author_facet Alomari, Abdulaziz Ali
author_sort Alomari, Abdulaziz Ali
title Synthesis, characterization and antioxidant activities of ni(ii) cu(ii), and zn(ii) complexes of substituted 4-phenyl-1,3,5-triazine-2,6- salicylaldimine / Abdulaziz Ali Alomari
title_short Synthesis, characterization and antioxidant activities of ni(ii) cu(ii), and zn(ii) complexes of substituted 4-phenyl-1,3,5-triazine-2,6- salicylaldimine / Abdulaziz Ali Alomari
title_full Synthesis, characterization and antioxidant activities of ni(ii) cu(ii), and zn(ii) complexes of substituted 4-phenyl-1,3,5-triazine-2,6- salicylaldimine / Abdulaziz Ali Alomari
title_fullStr Synthesis, characterization and antioxidant activities of ni(ii) cu(ii), and zn(ii) complexes of substituted 4-phenyl-1,3,5-triazine-2,6- salicylaldimine / Abdulaziz Ali Alomari
title_full_unstemmed Synthesis, characterization and antioxidant activities of ni(ii) cu(ii), and zn(ii) complexes of substituted 4-phenyl-1,3,5-triazine-2,6- salicylaldimine / Abdulaziz Ali Alomari
title_sort synthesis, characterization and antioxidant activities of ni(ii) cu(ii), and zn(ii) complexes of substituted 4-phenyl-1,3,5-triazine-2,6- salicylaldimine / abdulaziz ali alomari
publishDate 2012
url http://studentsrepo.um.edu.my/5796/3/A%2D_Title_outside.pdf
http://studentsrepo.um.edu.my/5796/10/B%2DTitle_inside.pdf
http://studentsrepo.um.edu.my/5796/12/D%2DAcknowledgment.pdf
http://studentsrepo.um.edu.my/5796/13/E%2DAbstract_%2Dphd.pdf
http://studentsrepo.um.edu.my/5796/14/F%2DAbstrak%2DPhD.pdf
http://studentsrepo.um.edu.my/5796/15/G%2DList_of_figures.pdf
http://studentsrepo.um.edu.my/5796/16/H%2DList_of_tables.pdf
http://studentsrepo.um.edu.my/5796/11/C%2DContents.pdf
http://studentsrepo.um.edu.my/5796/17/I%2DChapter_1_introd._final.pdf
http://studentsrepo.um.edu.my/5796/18/J%2DChapter2liter__ature_review.final.pdf
http://studentsrepo.um.edu.my/5796/2/K%2DChapter_3_Experimental_%2D_final.pdf
http://studentsrepo.um.edu.my/5796/20/L%2DH2L1%2D_H2L2_%2DH2L3_%2D_final.pdf
http://studentsrepo.um.edu.my/5796/21/Lz%2DH2L4_%2DH2L5_%2D_H2L6_final.pdf
http://studentsrepo.um.edu.my/5796/22/M%2DChapter_5_Antioxidant_activities.pdf
http://studentsrepo.um.edu.my/5796/23/N%2DChapter_6_Conclusions.pdf
http://studentsrepo.um.edu.my/5796/24/O%2DREFERENCES.pdf
http://studentsrepo.um.edu.my/5796/4/APPENDIX_1.pdf
http://studentsrepo.um.edu.my/5796/5/APPENDIX_2.pdf
http://studentsrepo.um.edu.my/5796/6/APPENDIX_3.pdf
http://studentsrepo.um.edu.my/5796/7/APPENDIX_4.pdf
http://studentsrepo.um.edu.my/5796/8/APPENDIX_5.pdf
http://studentsrepo.um.edu.my/5796/9/APPENDIX_6.pdf
http://studentsrepo.um.edu.my/5796/1/055%2D12743_(173.pdf
http://studentsrepo.um.edu.my/5796/25/paper_2.pdf
http://studentsrepo.um.edu.my/5796/
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score 13.211869

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