in dichloromethane byproducts: SeCl2; a mixt. of Se3N2Cl2 and an excess of SO2Cl2 in CH2Cl2 was transferred into a tube which was sealed under vac. at -78°C; warming to room temp.;; not isolated, detected by NMR spectroscopy;;

in dichloromethane byproducts: SeCl2; a mixt. of Se3N2Cl2 and an excess of SO2Cl2 in CH2Cl2 was transferred into a tube which was sealed under vac. at -78°C; warming to room temp.;; not isolated, detected by NMR spectroscopy;;