in ethanol (N2); RuCl3 and ligand in EtOH were refluxed for 3 h, on cooling to room temp. pptd. brown solid; pptn. filtered out, washed with EtOH, ether and pentane, drying in vac. yielded main product; chromy. of the vol. reduced washings (alumina, ether) and removal of solvents afforded decamethylruthenocene;

in ethanol 85°C, 3 h; filtration, washing with ethanol and ether, drying under reduced pressure, elem. anal.;

in ethanol ambient temp.; elem. anal.;

in tetrahydrofuran; diethyl ether (N2); to indene in THF was added MeLi in ether and stirred for 1 h, Ru complex was added and refluxed for 4 h, solvents were removed in vac.; residue was extd. with hot hexane, soln. passed through alumina, bright yellow fraction was collected, solvent was removed under reduced pressure; elem. anal.;

in tetrahydrofuran heating (60°C, 72 h), solvent removal (red. press.), residue extd. (toluene), volatiles removal (red. pressure), residue extd. (light petroleum, b.p. 40-60°C); chromy. (alumina), elution (light petroleum); collection of bright yellow band, concn. (red. pressure), cooling (-80°C, 24 h) on crystn., drying (vac.); elem. anal.;

PPh3 in ethanol Ar atmosphere, 78°C, 14 h; cooling, washing of ppt. (pentane), drying (vacuum); elem. anal., product Ru-complex contaminated with 12 mol-percent PPh3; elem. anal.;