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Synthesis and Conductivity Properties of Thiosemicarbazide Derivatives
Containing Pyridine Ring and Their Transition Metal Complexes
Sharmili Silvarajoo
Supervisor: Dr. Md Uwaisulqarni Osman
Bachelor of Science (Chemical Sciences)
School of Fundamental Science
Thiosemicarbazone derivatives, namely 2-pyridinecarboxyaldehyde thiosemicarbazone
(2-PCT) have been synthesized through the reaction between thiosemicarbazide and
2-pyridinecarboxyaldehyde which have successfully attracted the interest of
researchers in the fields of study such as biological, medical and industry. Compound
of 2-pyridinecarboxyaldehyde thiosemicarbazone (2-PCT) was characterized by using
Fourier Transform Infrared spectroscopy (FT-IR), Ultraviolet-visible spectroscopy (UV-
Vis), and CHNS elemental analysis. FT-IR spectrum shows the significance bands for
the functional groups of (C=N) and (C=S) that can be observed in the frequency of
1625cm -1 and 1147.15cm -1 , 876.51cm -1 , respectively. Meanwhile, UV spectroscopy
shows two main absorptions at 270 nm for transition for pyridine ring
chromophore and at 320 nm for n for C=N and C=S chromophore. Magnetic test
have been conducted by using Gouy balance when 2-PCT is reacted with copper salt
and nickel salt to form its complexes. The conductivity of CMC thin film was determined
using Electrochemical Impedance Spectroscopy (EIS), and it is proven that by mixing
CMC salt with Cu (II)-bis-2-PCT have the highest conductivity value of 1.898 x 10 -7
S/cm compared to CMC salt with Ni (II)-bis-2-PCT and CMC salt only thin film which
are 6.39 x 10 -8 S/cm, 1.36 x 10 -8 S/cm, respectively. It is prove that electrical
conductivity was increase due to the presence of metal.
470 | 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