in tetrahydrofuran soln. of formate added to stirred suspn. of complex (N2), gently warmed to 40°C (1 h), cooled to room temp.; mixt. of ethanol/n-hexane (1:1) added, concd. (brisk current of N2), sepd., collected on sintered glass frits, washed (EtOH, pentane), dried (N2);

in tetrahydrofuran N2 or Ar atmosphere; refluxing (3 h, ratio Rh-compd. org. compd. 1:10), cooling (room temp.); addn. of EtOH, washing (EtOH and pentane), drying (N2 stream); elem. anal.;