in benzene educt slurried in benzene, B2H6 bubbled through soln. for 24 h; purged with Ar, evapd. in vac., chromd. (SiO2, benzene/heptane), concd.in vac., filtered, dried in vac.;

in benzene-d6 under N2 or Ar, BBr3 and C6D6 distd. into NMR tube contg. Rh complex, sealed off under vac., reacted for 6 h; not isolated; analyzed by NMR;