in tetrahydrofuran; hexane under N2, addn. of Fe-compound in THF to ((Z)-C8H14)Cr(CO)5 in hexane at 20°C, stirred for 1 h; evapn. to dryness, dissolved in ether, concd., overnight at 4°C; elem. anal.;

in tetrahydrofuran; hexane under N2, addn. of soln. of ((Z)-C8H14)Cr(CO)5 in hexane to soln. of Mn-compound in THF at 0°C, stirred 1 h at 20°C; evapn. to dryness, dissolved in ether, filtration; elem. anal.;

in tetrahydrofuran; hexane under N2, addn. of soln. of ((Z)-C8H14)Cr(CO)5 in hexane to a freshly prepd. soln. of Re-compound in THF at 0°C, stirred 1 h at 20°C; evapn. to dryness, dissolved in ether, filtration, concn. of filtrate, crystn. at -28°C for 12 h; elem. anal.;

carbon monoxide in not given treatment alkaline soln. with carbon monoxide;

in tetrahydrofuran; hexane under N2, addn. of Fe-compound in THF to ((Z)-C8H14)Cr(CO)5 in hexane at 20°C, stirred for 1 h; evapn. to dryness, dissolved in ether, concd., overnight at 4°C; elem. anal.;

in tetrahydrofuran; hexane under N2, addn. of soln. of ((Z)-C8H14)Cr(CO)5 in hexane to soln. of Mn-compound in THF at 0°C, stirred 1 h at 20°C; evapn. to dryness, dissolved in ether, filtration; elem. anal.;

in tetrahydrofuran; hexane under N2, addn. of soln. of ((Z)-C8H14)Cr(CO)5 in hexane to a freshly prepd. soln. of Re-compound in THF at 0°C, stirred 1 h at 20°C; evapn. to dryness, dissolved in ether, filtration, concn. of filtrate, crystn. at -28°C for 12 h; elem. anal.;

in not given react. with piperidine;