in ethanol; water; acetonitrile under N2; soln. of Ru-contg. compd. (0.26 mmol) and ligand (0.13 mmol) in EtOH was heated to reflux for 6 h; mixt. was evapd. to dryness; solid obtained was dissolved in min. vol. of CH3CN; aq. soln. of NaClO4 was added; keeping at 0°C overnight; the mixt. was filtered, ppt. was washed with cold ethanol, and dried under vac.; purifn. with alumina column; elution with CH2Cl2-CH3CN; evapn. of the solvent under reduced pressure; elem. anal.;

2Cl-5Me-BQ in chloroform T=50°C; 2 h;