Na alcoholate in not given 1-2d;;

in further solvent(s) byproducts: CO; exposure to an N2-atmosphere, hydrocarbon soln.;;

CO in n-heptane (N2); soln. of Ru complex was heated to reflux (98°C) under CO purge for 45 min, solvent removed in vac.; residue was dissolved in CH2Cl2 and chromd. (TLC, silicagel, CH2Cl2/hexane 7:3 vol.);

CO in hexane Addn. of Ru3-complex to soln. of Ru(CO)5, heating to reflux under continuous purge with CO for 10 min, yellow soln. turns brown.; Concg., column chromy. (Florisil), eluation of Ru3(CO)12 with hexane, hexane/CH2Cl2 eluates Ru5-complex (elem. anal.) and later Ru6-complex.;

CO in n-heptane Addn. of Ru3-complex to soln. of Ru(CO)5, heating to reflux under continuous purge with CO for 15 min, yellow soln. turns brown.; Concg., column chromy. (Florisil), eluation of Ru3(CO)12 with hexane, hexane/CH2Cl2 eluates Ru5-complex , Ru6-complex (elem. anal.) and Ru7-complex (elem. anal.).;

in neat (no solvent) decompn. of gaseous (Ru(CO)5) forming solid (Ru3(CO)12);;

in n-heptane Heating to 98°C for 20 min.; Sepn. by column chromy. on Florisil.;

in hexane A soln. of Ru(CO)5 is added dropwise to a refluxing soln. of Ru5(CO)14(CNMe2)(H) over aperiod of 30 min.; chromy. on Florisil (hexane, hexane/CH2Cl2), further purification by TLC on silica gel (hexane/CH2Cl2);

in hexane A soln. of Ru(CO)5 is added dropwise to a refluxing soln. of Ru4(CO)12(CNMe2)(H) over a period of 3 h.; concn., chromy. on Florisil (hexane, hexane/CH2Cl2), further purification by TLC on silica gel (hexane, CH2Cl2); elem. anal.;

in cyclohexane heating soln. of (H)Ru3(COCH3(CO)10 (0.159 mmol) in cyclohexane at 70°C under N2; addn. of 3 aliquots of Ru(CO)5 (0.470 mmol) in cyclohexane over a 1-h period; stirring at 70°C for 1 .5 h;; removing solvent in vac.; dissolving residue in min. amt. of CH2Cl2; preparative thin layer chromy. (silica gel, cyclohexane/CH2Cl2 3:1); elem. anal.; recrystd. samples are contaminated with decompn. products HRu3(COCH3)(CO)10 and Ru3(CO)12;;