Formation of rhenium subcarbonyls on magnesium oxide from adsorbed K2ReCl6

Abstract

Supported rhenium tricarbonyls were prepared by reductive carbonylation of K₂ReCl₆ adsorbed on MgO powder. K₂ReCl₆ on MgO was treated at 350°C in CH₃OH-saturated CO, leading to the formation Of [Re(CO)₃{HOMg}_x{OMg}_3-x], where the braces denote groups terminating the bulk MgO, as evidenced by infrared spectra. The synthesis is the simplest known for preparation of supported rhenium subcarbonyls.