IrCl6(2-) or Fe(III)aq. or Fe(III)EDTA in water Kinetics;

sodium tetrahydroborate in water 1 equiv of Co-complex was stirred in the dark in water under Ar for 1 h, 0.017 equiv of NaBH4 in water was added, stirred for 20 min, CF3Br wasbubbled for 30 min; acetone added, desalted by extn. through phenol, aq. soln. concd., chromd. on Sephadex column (Na(1+), H2O), concd., crystd. by adding acetone;