STUDIES ON TETRAHYDROFURAN SOLUTIONS OF MANGANESE(II) DIHALIDES AND TERTIARY PHOSPHINES AND THEIR REACTIONS WITH DIOXYGEN. A REPLY TO A PAPER BY GREEN, MINGOS AND COWORKERS

Article abstract of DOI:10.1016/S0022-328X(00)84325-9

Green, Mingos and co-workers have described the oxidation of tertiary phosphines by dioxygen in the presence of manganese(II) species.Their observations and some conclusions mirror quite well our own observations (colour changes, production of ν(P=O) bands) and conclusions on manganese(III)phosphine oxide systems in published papers not cited by Green and Mingos.Their experimental observations indicate that the high-valent manganese/phosphine oxide system does not bind dioxygen, which agrees with our own observations.However, this system bears no relation to our authentic haem analogues, Mn(PR3)X2; some properties of the latter in reversibly binding dioxygen and carbon monoxide are described in this communication.