in dichloromethane React. of CrO3 with 1 equiv of Ph3CCl in CH2Cl2 results in a deep red soln. after stirring of mixt. (24 h, room temp., vac. or Ar).; Evapn. to dryness, extn. (hexane) and cooling to 0°C yields CrO2Cl(OCPh3) with Ph3CCl. Purifn. by repeated crystn. (C6H14). Extg. of remained residue from first extn. (CH2Cl2/C6H14) and crystn. at -20°C yields CrO2(OCPh3)2. Elem. anal.;
in dichloromethane-d2 Addn. of Me3SiCl to a stirred suspn. of CrO3 in CD2Cl2 at 1:1 ratio (vac. or Ar) and stirring for 24 h.; Filtn. into NMR tube, proton NMR identification. Attempts to characterize the resulting compd. by electron impact mass spectrometry prove unsuccessful.;
in neat (no solvent) byproducts: Cr-oxides; with dry HCl carmine red decoloration; CrO3 is formed which further reacts to a brown Cr-oxide mixture and KCl;;
