Synthesis, Spectral, and Structural Characterization of Bisthiocarbohydrazone Derivatives

Abstract

Bisthiocarbohydrazone derivatives of three heterocyclic ketone ligands, having a flexible coordination ability; 1, 5-bis (2-acetylthiophene) thiocarbohydrazone; 1, 5-bis (2-acetylfuran) thiocarbohydrazone; and 1, 5-bis (2-acetylpyrrole) thiocarbohydrazone were synthesized and characterized by elemental analysis, UV-visible, FT-IR, cyclic voltammetry, and ¹H and ¹³C-NMR spectral studies. All bisthiocarbohydrazone exhibited the thioketone—thioenol tautomeric forms, as evidenced by IR spectral data and single crystal X-ray diffraction studies of 1, 5-bis (2-acetylfuran) thiocarbohydrazone and 1, 5–bis (2-acetylpyrrole) thiocarbohydrazone.

Supplementary materials are available for this article. Go to the publisher's online edition of Phosphorus, Sulfer, and Silicon and the Related Elements for the following free supplemental files: Additional figures and tables.

GRAPHICAL ABSTRACT

Keywords:

• Thiocarbohydrazone
• cyclic voltammetry
• UV-visible
• FT-IR
• NMR spectra
• single crystal X-ray crystallography

Acknowledgments

A. Sreekanth acknowledges the DAE-BRNS, Department of Atomic Energy (NO.2010/20/37C/10/BRNS/ 2494) for a young scientist award. S. L. Ashok Kumar acknowledges MHRD, Govt of India, for a research fellowship. P. Thomas Muthiah and S. Jegan Jenniefer thank DST, India for funding the FIST program, Diffractometer Facility at the School of Chemistry, Bharathidasan University, Tiruchirappalli.