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Microwave-Assisted Synthesis of Cd (II) Complex of 4-Pyridinecarboxaldehyde Thiosemicarbazone
* 1 , 2
1  Research Laboratory of Inorganic Materials Synthesis, Department of Chemistry, Iran University of Science and Technology, Narmak, Tehran, Iran
2  Iran University of Science and Technology

Abstract: Thiosemicarbazones, were obtained by condensation of thiosemicarbazide with suitablealdehydes or ketones, act as ligand in the preparation of their complexes. They bind to themetal through N and S atoms. Their metal complexes may have biological properties. In thiswork, di chloro 4-pyridinecarboxaldehyde thiosemicarbazone cadmium (II) was synthesizedby an efficient and facile microwave heating technique. The reaction was performed usingCdCl2.H2O as metal source and 4-pyridinecarboxaldehyde thiosemicarbazone as ligand in 1:1molar ratio in EtOH under microwave irradiation with the power of 100 W for 30 sec. Theprogress of the reaction was monitored by TLC. The product was characterized by Fouriertransform infrared (FT-IR), 1H-, 13C- NMR spectroscopy and elemental analysis. Spectroscopic data:IR (KBr, cm-1): 3440(m), 3317(m), 3172(m), 1541(s), 1326(s), 823(m), 655(m), 530(m).1HNMR (DMSO-d6, ppm) δH: 7.78(s, 2H), 8.21(s, 2H), 8.39(s, 1H), 8.57 (d, 2H), 11.69(s,1H).13CNMR (DMSO-d6, ppm) δC: 121.88, 139.93, 142.66, 150.30, 178.68. Elemental analysis:Anal. Calc. for C7H8N4SCdCl2: C, 23.14; H, 2.20; N, 15.42. Found C, 24.29; H, 2.18; N,15.27.
Keywords: Microwave, Thiosemicarbazide, 4-Pyridinecarbaldehyde, Cadmium.