in acetonitrile byproducts: CO; 27°C; IR;

tetrahydrofuran in tetrahydrofuran addn. of 5 mL of 1E-2 M Mn(CO)5(1-) in THF to 5 mL of 1E-2 M Mn(CO)5PPh2Me(1+) in THF under Ar at 22°C, react. time 5 min; not isolated; detected by IR and TLC;

1: tetrahydrofuran View Scheme