sodium chloride; tris (triphenylphosphine)rhodium(I) chloride in N,N,N',N',N'',N''-hexamethylphosphoric triamide byproducts: Hg; stirring mixture of 9,9'-bis(o-carboranyl)mercury and catalytic amt. of(PPh3)3RhCl in HMPA for 20 h at 100°C; decanting from metallic Hg, pouring into concd. aq. NaCl, extg. with ether, washing ext. with NaCl soln. and water, drying over Na2SO4, distg. off solvent;

in neat (no solvent) Irradiation (UV/VIS);