tetra-n-butyl hexafluorophosphate in acetonitrile Kinetics; Electrolysis; constant-potential electrolysis at +0.5V vs SCE of PPh4(1+)MnCO5(1-) in acetonitrile containing tetra-n-butyl hexafluorophosphate, uptake of 0.99 electron/mol of Mn(CO)5(1-) charged; IR spect. shows Mn2(CO)10 as the only carbonyl-containing product;

in dichloromethane Addn. of 2 equivs. of (PPh4)(Mn(CO)5)-soln. to Fe3(CO)9(CCH2Ph) in CH2Cl2 under N2 at room temp., stirring (5 h).; Evapn. to dryness, extn. of residue with hexane to remove Mn2(CO)10, dissolving in min. amt. of methanol, cooling to -20°C, elem. anal..;

in dichloromethane Addn. of 2 equivs. of (PPh4)(Mn(CO)5)-soln. to Fe3(CO)9(CCH2C(O)CH3) in CH2Cl2 under N2 at room temp., stirring (5 h).; Evapn. to dryness, extn. of residue with hexane to remove Mn2(CO)10, dissolving in min. amt. of methanol, cooling to -20°C, fractional crystn. yiedls the allenyl complex, elem. anal..;

in dichloromethane Addn. of 2 equivs. of (PPh4)(Mn(CO)5)-soln. to Fe3(CO)9(C(CH2)3CH3) in CH2Cl2 under N2 at room temp., stirring (5 h).; Evapn. to dryness, extn. of residue with hexane to remove Mn2(CO)10, dissolving in min. amt. of methanol, cooling to -20°C, elem. anal..;

in dichloromethane Addn. of 2 equivs. of (PPh4)(Mn(CO)5)-soln. to Fe3(CO)9(CCH2C(O)OCH3) in CH2Cl2 under N2 at room temp., stirring (5 h).; Evapn. to dryness, extn. of residue with hexane to remove Mn2(CO)10, dissolving in min. amt. of methanol, cooling to -20°C, fractional crystn. yields the allenyl complex, elem. anal..;