Abstract
A series of pyridinecarbothioamides (PCT) are synthesized to produce parrot green crystals. The crystal structure of the compounds was resolved using single crystal XRD technique. It confirmed the formation of monoclinic system with different space groups depending on the position of side chains in the carbothioamide. The 3D structural arrangements show that molecules in the crystal structure are interlinked by NH … N or SH … S hydrogen bonding. The conversion of pyridinecarbonitrles to their corresponding pyridinecarbothioamides by the treatment of ammonia and H2S was confirmed by their mass spectra. Major peak was observed at m/z of 138. Thermogram of PCTs, shows a single step decomposition thereby confirming the melting points of corresponding PCT’s as 137 °C, 190 °C, 209 °C respectively. Nuclear Magnetic Resonance (NMR) spectroscopic techniques showed the signals corresponding to pyridine ring protons and amino group.
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