carbon monoxide; triphenylphosphine in methanol Cu-compd. in MeOH satd. with CO, is allowed to react with 1 atm of CO at 70°C as the green colour lightened (about 4 h). Cooling of reactor to 22°C and measuring of volume of unreacted CO.; IR and MS identification of org. compd., GLC anal.; detn. of Cu(I) present in soln. after addn. of PPh3, elem. anal.;

P(C6H5)3 in dichloromethane (N2); appropiate amount of phosphine added to a suspn. of CuI; concentrated; cooled;

triphenyl phosphine in dichloromethane a stoich. amount of PPh3 was added to a CH2Cl2 soln. of Rh2Cu-cluster under N2, mixt. was stirred for ca. 30 min at room temp.; evapd., residue was extd. with Et2O, Rh2-complex was isolated from the ext., solid residue was identified as Cu(PPh3)Cl;

tetrakis-(hydroxymethyl)-phosphonium chloride in water; toluene soln. of CuP(C6H5)3Cl (toluene) contacted with aq. alkali at 300 K; oncetwo layers stabilized, tetrakishydroxymethylphosphonium chloride (THPC) injected into aq. layer and proceed for several h;