in decalin byproducts: decamethylfulvalene; Ar atmosphere, stirring (reflux (190°C), 6 h); evapn. (vacuum), extn. (petroleum ether), chromy. of extract (SiO2, petroleum ether), dissolution of residue (CH2Cl2), stirring (SiO2), drying (vacuum), chromy. (SiO2, 1. petroleum ether (Ru complex), 2. petroleum ether/toluene (5:1) (Fe complex));

in further solvent(s) byproducts: decamethylfulvalene; Ar atmosphere, stirring in 1-methylnaphthalene (reflux (250°C), 22 h); removement of solvent (vacuum), extn. (n-hexane), dissolution of residuewith toluene, removement of solvent (vacuum), dissolution (CH2Cl2), add n. (silica gel), drying, chromy. (silica gel, 1. n-hexane ((C5(CH3)5Fe(P5)), 2. toluene, (C5(CH3)5)Os(P5));