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Perspective view of the molecular structures of the derivatives 2-(pyridin-2-yl-acetyl)-N-[3-(trifluoromethyl)phenyl]hydrazinecarbothioamide (3), 5-(pyridin-2-yl-methyl)-N-[3-(trifluoromethyl)phenyl]-1,3,4-thiadiazol-2-amine (3b), 4-(5-chloro-2-methylphenyl)-5-(pyridin-2-yl-methyl)-2,4-dihydro-3H-1,2,4-triazole-3-thione (7a) and N-(2-chloro-5-methylphenyl)-5-(pyridin-2-ylmethyl)-1,3,4-oxadiazol-2-amine (7f).
