Abstract

A series of polymer- and silica-supported manganese phosphine complexes has been prepared and characterized. These complexes react reversibly with molecular oxygen in the solid state to yield 1:1 Mn:O 2 adducts. The reaction may be reversed either by a pressure drop or a temperature rise. All the O 2 adducts are highly colored and binding curves as a function of the partial pressure of oxygen have been constructed. The silica-supported complexes can be prepared from ligand-silanes either by reaction with dehydrated silica and then with anhydrous manganese(II) bromide or vice versa.

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