in tetrahydrofuran; hexane (argon); addn. of Mo(CO)5(THF) in THF to the Fe complex in hexane, stirring (room temp., 3 h); removal of solvents (vac.), column chromy. (SiO2; hexane); elem. anal. (for the Fe3Mo cluster);

Li(HB(CH(CH3)2)3) in tetrahydrofuran; benzene byproducts: H2, LiCl, B(CH(CH3)2)3; (N2); Li(HB(CH(CH3)2)3) (THF) added dropwise with stirring to S2Fe2(CO)6 (benzene); ClB(NMe2)2 (C6H6) added dropwise with stirring (15 min); stirred (30 min); volatiles removed in vac.; extd. (pentane, 12 h); crystd. on evapn.;

in n-heptane N2 atmosphere; stirring (70°C, 40 min); filtn., evapn., chromy. (silica gel);