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Studies on tetrahydrofuran solutions of manganese(II) dihalides and tertiary phosphines and their reactions with dioxygen

1980; Elsevier BV; Volume: 201; Issue: 2 Linguagem: Inglês

10.1016/s0022-328x(00)87928-0

1872-8561

Roger M. Brown, Roderick E. Bull, Malcolm L. H. Green, Peter D. Grebenik, Jesus J. Martin-Polo, D. Michael P. Mingos,

Porphyrin and Phthalocyanine Chemistry

Abstract Solutions of Mn(THF) 2 Br 2 and MnI 2 and tertiary phosphines in tetrahydrofuran at 0°C are oxidised by dioxygen or electrochemically giving deep blue-purple solutions which have identical electronic spectra. The principal band with λ max at 570 nm has ϵ>9000 1 cm −1 mol −1 . Tertiary phosphines have been shown to be oxidised to the corresponding tertiary phosphine oxides. No evidence was found for the reversible formation of dioxygen-manganese complexes.