Associate Professor in Inorganic Chemistry
BSc, MSc (Raj.), PhD (UTM)

My research interests are centred on the synthesis of new coordination complexes, focusing mainly on transition and organotin(IV) metals with hydrazone and azine ligands. The complexes can be characterized via varieties of modern techniques, such as IR, ¹H and ¹³C-{¹H} NMR, UV-Visible spectroscopy and elemental analysis. The structures are determined primarily by single-crystal X-ray crystallography.

The current work is focused mainly on organotin(IV). Organotin(IV) complexes are generating renewed interest in their biological properties. It has been found that organotin complexes possess a wide variety of biological activity i.e. antibacterial, antifungal and antitumour due to the presence of NNS/NNO-donor group in the complexes. They are used as stabilizers for plastics and paints, industrial catalysts, molluscicides, textile and wood preservation and antifouling agents. My interest is in the organotin chemistry and in the investigation of the coordination behaviour of hydrazone and azine with different type of organotin(IV) metals and to examine their chemical, structural and biological activity properties with different type of published organotin-hydrazone/azine complexes.

Selected Publications
Affan, M. A., Fasihuddin, B. A., Liew, Y. Z., Bohari, M. Y., Ramli, B. H and  Mustaffa, B. S (2007). Characterization of novel di-organotin(IV) complexes  with O, N, O – donor ligand derived from carbohydrazide: X-ray crystal structure of  [Ph₂Sn(H₂CBS)]. Indian Journal of Chemistry, 46A, 1063-1068.

Affan, M. A., Fasihuddin, B. A., Liew, Y. Z., Bohari, M. Y., Ramli, B. H and  Mustaffa, B. S (2007). Synthesis, characterization and biological activity of  organotin(IV)  complexes with carbohydrazide–bis(salicylaldehyde) (H₄CBS): X- ray  crystal structure  of [tert-Bu₂Sn(H₂CBS)]. ACGC Chemical Research  Communications, 21, 23-29.

Affan, M. A., Fasihuddin B. A., Mustaffa B. S and Bohari M.Y (2005). Synthesis and spectroscopic characterization of organotin(IV) derivatives with hydrazone: X-ray crystal structure of [PhSnCl₂(AcPyBzh)] (AcPyBzh = 2 acetylpyridinebenzhydrazone). ACGC Chemical Research Communications, 19, 34-38.

Affan, M. A., Fasihuddin, B. A., Ramli, B. H., Mustaffa, B. S and Bohari, M.  Y (2005). Synthesis and spectral characterization of organotin(IV) derivative of 2-methylpyridylbenzhydrazone: X-ray single-crystal structure of [Me₂SnCl(AcPyBzh)](AcPyBzh = 2-methylpyridylbenzhydrazone).  Pakistan Journal of Scientific and Industrial Research, 48(6), 381-385.

Affan, M. A., Mustaffa, B. S., Sukeri, M. M. Y and Bohari, M. Y (2004). Dichloromethyl[1-(2-pyridyl)ethanone benzoylhydrazonato]tin(IV). Acta. Cryst. Section-E, E60, 126-128.

Affan, M. A., Fasihuddin, B. A., Ramli, B. H., Mustaffa, B. S and Bohari, M. Y (2003). Synthesis and structural characterization of diorganotin(IV) derivatives of 2-acetylpyridinebenzhydrazone: X-ray crystal structure of [n-Bu₂SnCl(AcPyBzh)] (AcPyBzh = 2-acetylpyridinebenzhydrazone. In: Analytical Chemistry, eds Zaini B A, Fasihuddin B A, Ismail B J, Lau S & Murtedza M. Published by UNIMAS & ANALIS, Sarawak, Malaysia, pp 214-221.

Affan, M. A., Hitam, R. and Shamsuddin, M (2002). Synthesis and spectroscopic characterization of molybdenum carbonyl benzophenoneazine complexes. Indian Journal of Chemistry, Section-A, 41A, 2540-2543.

Affan, M. A., Shamsuddin, M., Hitam, R., Yamin, B. M. A., Fun, H. K and Ibrahim, R. A (1999). Crystal structure of methylpyridyl-benzophenoneazine tetracarbonyl-molybdenum(0), C₂₄H₁₇MoN₃O₄. Z. Kristallogr.-New Cryst. Strut., 214, 1-2.

Affan, M. A., Shamsuddin, M., Hitam, R., Yamin, B. M. A., Boshaala, A. M. A., Kun, F. H and Razak, A. I (1999). Crystal structure of methyl-pyridylhydrazone tetracarbonyl-molybdenum(0), C₂₄H₁₃MoN₃O₄. Z. Kristallogr. -New Cryst. Strut., 214, 3-4.

Affan, M. A., Shamsuddin, M and Hitam, R (1998). Synthesis, Characterization and X-ray crystal structure of a dimethyltin(IV) dichloride complex of 2-acetylpyridine benzophenone azine. Bulletin Kimia, 13(2), 53-59.

Affan, M. A., Tarafder, M. T. H., Ahmed, A  and Islam, M. Q (1993). Thiocyanato complexes of Cr(III), Co(II), Ni(II), Zn(II), Cd(II) and U(VI) ions containing some unidentate and bidentate auxiliary ligands. Pakistan J. of Scientific and Industrial Research, 36(2), 74-76.

Affan, M. A., Tarafder, M. T H., Ahmed, A and Islam, M. Q (1991). Complexes of Co(III), Ni(II), Cu(II), Zn(II) and U(VI) with the quadridentate Schiff base ligands : C₂₀H₁₆N₂O₂ and C₁₄H₁₂N₂O₂. J. of the Bangladesh Chemical Society, 4(1), 15-20.