Com thermogravimeteric study using tgdta technique

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Unformatted text preview: IV) COMPLEXES WITH VITAMIN K3-2- HYDRAZINOPYRIDINE: X-RAY CRYSTAL STRUCTURE OF VITAMIN K3-2HYDRAZINOPYRIDINE [VHZP] 1 *M.A. Affan, Dayang Norafizan A. Chee, Fasihuddin Ahmad, Ismail J., Bohari M. Yamin and Ramli Hitam 1 1 1 1 2 3 Faculty of Resource Science and Technology, Universiti Malaysia Sarawak, 94300 Kota Samarahan, Sarawak, Malaysia 2 School of Chemical Sciences and Food Technology, Universiti Kebang saan Malaysia, 43600 Bangi, Selangor, Malaysia 3 Universiti Pendidikan Sultan Idris, 35900 Tanjong Malim, Perak, Malaysia E-mail: maaffan@frst.unimas.my Six new organotin(IV) complexes were synthesized by direct reaction of RSnCl 3 (R= Me, Bu and Ph) or R2SnCl2 (R= Me, Bu and Ph) and Vitamin K3-2-hydrazinopyridine (Vit.K3-HzP) (1) in Schlenk round bottom flask under nitrogen atmosphere. All organotin(IV) complexes ( 2-7) have been characterized by 1 elemental analyses, molar conductivity, UV-Visible, IR and H NMR spectral studies. The organotin(IV) complexes (2-7) are non-electrolytic in nature. The crystal structure of ligand (1) has also been determined by X-ray crystallography diffraction analyses. The ligand (1) and its organotin(IV) complexes (2-7) have also been tested for their toxicity and anti -termitic potential and found to be moderately active against Artemia salina and Captotermes sp. INO-O4 SYNTHESIS AND CHARACTERIZATIONS OF HYDROTHERMALLY DERIVED COBALT ORTHOTITANATE GREEN PIGMENT Natthawat Semakul and Apinpus Rujiwatra Department of Chemistry, Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand E-mail: apinpus@chiangmai.com Green cobalt orthotitanate pigment was prepared from the reactions between commercially available Co(NO3)2.6H2O and TiO2 under hydrothermal conditions at 180 - 220 C for 1 - 5 days. The influences of synthetic conditions i.e. sodium hydroxide concentration, hydrothermal temperature and time on the yielded pigment powders were discussed. It is apparent that the concentration of sodium hydroxide mineralizer significantly...
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