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Preparation of N-methylamidoselenates

J. Krejčí, I. Horsák, and K. Dostál

Institut für anorganische Chemie der Naturwissenschaftlichen Fakultät an der J. E. Purkync-Universität, Brno


Abstract: The salts [NCH3H3] [O3SeNHCH3] and [N(CH3)2H2] [O3SeN(CH3)2] were prepared by the reaction of potassium diselenate with methylamine or dime thy lamině. The binary substitution of these substances in non-aqueous medium gave rise to potassium ammonium, and silver N-methyl- or N-dimethylamidoselenates, respectively. The aminolysis of methylselenates also results in the formation of N-substituted amidoselenates. N-Methyl- and N-dimethylamidoselenates thus prepared were characterized on the basis of powder diagrams and infrared spectra. They are the substances which are thermally unstable and show a tendency to solvolyse. The [O3SeNHCH3]- as well as [O3SeN(CH3)2]- ions are more stable only in weak alkaline aqueous solutions. This fact was used for their identification and for testing the purity of all salts prepared by paperchromatography.

Full paper in Portable Document Format: 253a169.pdf (in German)


Chemical Papers 25 (3) 169–176 (1971)

Friday, October 18, 2019

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