Jasmina, Majit (2008) Water quality and phytoplankton assessment in three selected waterfalls of Kuching and Serian districts, Sarawak. [Final Year Project Report] (Unpublished)
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Abstract
Two tridentate Schiff base ligands, containing a donor set of ONN and ONS were prepared by the reaction of salicylaldehyde with 2-aminothiophenol and benzhydrazide with 2- benzoylpyridine. Four organotin(IV) complexes (3-6) of salicylaldehyde-2-aminothiophenol ligand (1) with RnSnCl4-n (n = 1, 2, 3) have been synthesized in the presence of base in absolute chloroform in 1:1 mole ratio under nitrogen atmosphere. Another three organotin(IV) complexes (7-9) of 2-benzoylpyridinebenzhydrazone ligand (2) with RnSnCl4-n (n = 1, 2, 3) have also been synthesized in the presence of base in absolute methanol in 1:1 mole ratio. Schiff base ligands (1-2) and their organotin(IV) complexes (3-9) have been characterized by CHN analyses, UV-visible, molar conductance and FTIR spectral analyses. Among them, ligand (2) and complex (7) have also been determined by 1H NMR spectral studies. All organotin(IV) complexes (3-9) are non-electrolytic in nature. Based on the FTIR and 1H NMR analyses, ligand (1) acts as dinegative tridentate ligand in the organotin(IV) complexes (3-6). Whereas the ligand (2) acts as uninegative tridentate nature in its organotin(IV) complexes (6- 9). A five-coordinated molecular structure has been proposed for the organotin(IV) complexes (3-6) of ligand (1) while a six-coordinated molecular structure has been proposed for organotin(IV) complexes (7-9) of ligand (2).
Item Type: | Final Year Project Report |
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Additional Information: | Project Report (B.Sc.) -- Universiti Malaysia Sarawak, 2008. |
Uncontrolled Keywords: | Water quality management, Sarawak, phytoplankton assessment, waterfalls of Kuching and Serian districts, Sarawak |
Subjects: | G Geography. Anthropology. Recreation > GE Environmental Sciences |
Divisions: | Academic Faculties, Institutes and Centres > Faculty of Resource Science and Technology Faculties, Institutes, Centres > Faculty of Resource Science and Technology |
Depositing User: | Karen Kornalius |
Date Deposited: | 27 Mar 2014 03:45 |
Last Modified: | 03 Jul 2023 07:57 |
URI: | http://ir.unimas.my/id/eprint/1543 |
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