Transition metal ion complexes of thiosemicarbazones derived from 2-acetylpyridineN-oxide. Part III. Spectral and thermal studies of the metal complexes of 2-acetylpyridineN-oxide thiosemicarbazone

Summary Metal complexes of 2-acetylpyridineN-oxide thiosemicarbazone have been prepared and characterized. Coordination occurs as a neutral bidentate (ON) and a deprotonated tridentate (ONS) ligand.     

Future contributions to Journal of Crystallographic and Spectroscopic Research

Future contributions to Journal of Crystallographic and Spectroscopic Research     

An ion-exchange method for the detection of amides,imides and anilides

Ion-exchange resins are efficient catalysts for the acid hydrolysis of amides, imides and anilides; the ammonium ion or aniline so formed can be detected by the well-known specific tests for these species. In general, the proposed tests are simpler, faster and more selective than those already available. The amounts that can be detected are of the order of 0.05–5 μg depending on the compound.     

Solvent effects on the acid-catalyzed hydrolysis of tetramethylurea

Tetramethylurea was hydrolyzed in aqueous hydrochloric acid at temperatures of 80, 90, and 100°C. All reactions were carried out in an excess of both tetramethylurea and water, with first-order dependence on acid concentration being observed. As the concentration of water was increased, the rate of hydrolysis decreased until equimolar amounts of water and tetramethylurea were present. Subsequent addition of water had no effect on the observed rate.