Title of article :
Synthesis and Characterisation of Tetraalkylammonium Tetrathiotungstate Complexes: X-Ray Cystal Structure of Tetrapropylammonium Tetrathiotungstate, [{(C3H7)4N}2WS4] (Sintesis dan Pencirian Kompleks Tetraalkilamonium Tetratiotungstat: Struktur Kristalografi Sinar-X bagi Tetrapropilamonium Tetratiotungstat, [{(C3H7)4N}2WS4] )
Author/Authors :
Rahman, Fadhli Hadana Universiti Kebangsaan Malaysia - School of Chemical Sciences and Food Technology,Faculty of Science and Technology, Malaysia , Khuzaimah Universiti Kebangsaan Malaysia - School of Chemical Sciences and Food Technology,Faculty of Science and Technology, Malaysia , Daik, Rusli Universiti Kebangsaan Malaysia - School of Chemical Sciences and Food Technology,Faculty of Science and Technology, Malaysia , Kassim, Mohammad B. Universiti Kebangsaan Malaysia - School of Chemical Sciences and Food Technology,Faculty of Science and Technology, Malaysia , Wan Daud, Wan Ramli Universiti Kebangsaan Malaysia - Faculty of Engineering - Department of Chemical and Process Engineering, Malaysia
Abstract :
The metathesis reaction of aqueous solutions of tetraethylammonium chloride [(C3H5)4NCl, tetrapropylammonium bromide [(C3H7) 4NBr] and tetrabutylammonium iodide [(C3H7) 4Nl] with ammonium tetrathiotungstate in the absence of oxidizing agent afforded the mononuclear tetraethylammonium tetrathiotungstate [{(C2H5)4N} 2WS4 (1), tetrapropylammonium tetrathiotungstate [{(C3H7)4N} 2WS4 (2) and tetrabutylammonium tetrathiotungstate [{(C4H9)4N}2WS4] (3). Yields obtained for the complexes were 17%,21 %and 14% respectively. The characteristic of WS stretching mode was detected at 451, 448, 453 em-1 for 1, 2 and 3. UV-Vis spectra showed three peaks for each complex. The complex 2 has been crystallographically and spectroscopically characterized. The crystal adopted a monoclinic system with a =15.4246(2) A°, b =29.7390(1) A°, c =16.5056(2) A° and β =114.11 °and belong to the P2(1)/ n space group. The crystal structure showed a highly disordered tetrapropylammonium molecule involving the position of the C and N atoms. Complexes 1 and 3 were not characterized crystallographically due to its difficulty to form a single crystal
Keywords :
Photocatalyst , hydrogen , photolysis , tungsten , tris(dithiolene)
