Synthesis, Characterization and Crystal Structures of a Thiosemicarbazone Ligand and Its Silver(I) Complex

Document Type: Research Article

Authors

1 Department of Chemistry, Faculty of Science, Golestan University, Gorgan, Iran

2 PhD Educated, Department of Chemistry, Payame Noor University, PO Box 19395-3697 Tehran, Iran

3 Institute of Physic of the Czech Academy of Sciences, Na Slovance 2, 182 21 Prague, Czech Republic

Abstract

Thiosemicarbazone ligand 4Hbatsc = 4-hydroxybenzaldehyde-thiosemicarbazone and its silver(I) complex [Ag(PPh3)3(4Hbatsc)]NO3 were synthesized an characterized by elemental analysis (CHN), FT-IR spectroscopy and single crystal X-ray diffraction. The triclinic unit cell of 4H-ba-tsc (space group P-1) contains two independent molecules. Each of the two independent molecules is almost planar, with the sulfur atom (S1/S2) and the hydrazine nitrogen atom (N6/N4) in the E position with respect to the C3-N5/C4-N4. The title complex is a triclinic P-1 mononuclear complex with the silver(I) ion coordinated in a distorted tetrahedral geometry by one S atom of 4H-ba-tsc and three P atoms of three PPh3. The complex involves the 4H-ba-tsc thiosemicarbazone ligand in an S monodentate bonding mode. In addition, the thermal behavior of the complex was studied using thermogravimetry in order to evaluate its thermal stability and thermal decomposition pathway. Finally, particles of the complex were prepared in an ultrasonic bath.

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