hydrogenchloride in diethyl ether; dichloromethane addn. of HCl gas to a soln. of Re-compd. in CH2Cl2 and ether at -78°C, kept at -78°C for 20 min, warmed to 25°C over 45 min; filtered through Celite, concd., cooled, recrystn. from a mixture of ether and pentane; elem. anal.;

hydrogenchloride in dichloromethane; pentane addn. of HCl gas to a soln. of Re-compd. in CH2Cl2 and pentane at -78°C, kept at -78°C for 20 min, warmed to 25°C over 45 min; addn. of CH2Cl2, filtered through Celite, concd., cooled, crystn. from a mixture of CH2Cl2 and pentane; elem. anal.;