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As[N(CH3)2]3 reacts with the following isocyanates: FSO2NCO, n-C4F9SO2NCO, SO2(NCO)2 and (CH3)3SiNCO. The products which result from reaction of FSO2NCO and n-C4F9SO2NCO are the acyclic tri- and bisubstituted arsines [xxx]
In contrast, SO2(NCO)2 and (CH3)3SiNCO form eight- and four-membered ring compounds, where the skeleton consists of the atoms As2S2N4 (3) and As2N2 (4). The new compounds were characterized by NMR and mass spectra.