in tetrahydrofuran under N2, to soln. of Mo(CO)5(THF) in THF added soln. of C4H4B(Ph)(NH3) in THF, kept at 65°C for 5 h; evapd.(vac.), extd.(pentane), filtered, concd., cooled(-30°C), chromd. (Al2O3/7percent H2O(water-cooled, light protected column); pentane, pentane/ether), concd.(vac.), dried(1E-5 bar/-78°C), sublimed(1E-5 bar), crystd.(hexane); elem. anal.;

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.;

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.;

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);

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.;

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);

in tetrahydrofuran (N2); not isolated (NMR monitoring);

triphenylphosphine in tetrahydrofuran Kinetics; byproducts: THF; 15-40°C; phosphine concn. 0.229E-2 to 0.987E-2 M; pressure 1-100 MPa;