acetic acid in methanol; ethyl acetate

in water

triphenylphosphine in chlorobenzene Rh atoms co-codensed with (COCl)2 over 3.5 h, product washed with CH2Cl2, solvent removed in vacuo, solid washed with petroleum ether, dried invacuo, suspended in C6H5Cl and treated with PPh3 in C6H5Cl, mixt. stirred for 90 min at room temp.; soln. filtered into petroleum ether, ppt. washed with petroleum ether and dried in vacuo, product dissolved in hot CH3CN (60°), soln. filtered and cooled, crystals washed with CH3CN and dried in vacuo;

dihydrogen peroxide

in conc. ammonia; ethanol

sodium methylate in methanol

in neat (no solvent) finely divided metallic Rh is heated in dry Cl2 at to 540 °C ;;

in neat (no solvent) heating;;

in neat (no solvent) heating with Rh;;

in neat (no solvent) mixt. of Rh and NaCl in Cl2 stream (red heat);;