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Synthesis of Thiosemicarbazide Derivatives and Their Zinc (Ii) Metal
Complexes
Muhamad Hazwan Bin Zaaba
Supervisor: Dr Md Uwaisulqarni Bin Osman
Bachelor of Science (Chemical Sciences)
School Of Fundamental Science
Thiosemicarbazide derivative compound, chitosan and its zinc (II) metal complex has
been successfully synthesized and their electrical conductivity was measured. A
compound, (E)-2-(5-oxohexan-2-ylidene) hydrazinecarbothioamide, (2OHC) was
characterized using spectroscopic technique namely CHNS elemental analyser, FTIR
spectroscopy, and UV-Visible spectroscopy. The significant band showed by the FTIR
spectrum for the functional groups are ʋ(N-H), ʋ(C=N), ʋ(C=S) with the frequencies
of 3399.40 cm -1 , 1509.21 cm -1 , 1205.33 cm -1 , respectively. The thin film was formed
by using chitosan mixed with the 2OHC and metal acetate, [2OHC-ChZn (II)]. The
molecular structure of the new synthesized compound which is [2OHC-ChZn (II)]
complexes possesses azomethine group, which contains nitrogen and sulphur atoms
that enables bonding with metal ions. The electrical conductivity of the thin films was
measured using the Electrical Impedance Spectroscopy (EIS) instrument and electrical
conductivity of the [2OHC-ChZn (II)] complexes was 8.117x10 -4 Scm -1 . This research
found that the conductivity increases due to the presence of metals.
419 | U M T U N D E R G R A D U A T E R E S E A R C H D A Y 2018