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Substituted amides react with tridiloromethanesulfenyl chloride in the presence of triethylamine to following compounds: S=PCl2NCH3SCCl3, S=PFCl2NCH3SCCl3, S =PFClNCH3SCCl3, S=PF2NCH3SCCl3, O = PCl2NCH3SCCl3, O= PFClNCH3SCCl3, O = PF2NCH3SCCl3, FSO2NCH3SCCl3 and CF3SO2-NCH3SCCl3. The properties of these substances are described. They were characteriszed by elemental analyses, IR- and mass spectra. 19F-, 1H- and 31P-NMR spectra are reported and discussed.
We investigate the possibility of selfconsistent solutions for antiferromagnetism in the Hubbard model in the decoupling of the Greens functions introduced by Hubbard in his first paper. On the base of this approximation Arai has calculated the band splitting for antiferromagnetism, but, as will be shown in this paper, Hubbard's approach fails to yield antiferromagnetism for nearest neighbour hopping in the same way as it does not yield ferromagnetism, and no selfconsistent solutions of the problem beyond the well known paramagnetic solution do exist.