EXCITED (UO22-U-3 - A VERSATILE REAGENT FOR PHOTOINDUCED LIGAND EXCHANGES IN OS (III)-COMPLEXES())

Uranyl compounds can extract CO from organic compounds like aldehydes by less than or equal to 490 nm irradiation [1; 2]. Therefore, aldehyd es permit multiple carbonylations of Os complexes replacing both halid o and oxalato ligands by CO, also introducing anions like SCN-. This i s accomplished by exposing a solution containing (TEA)-oxalatohaloosma tes, UO2(NO3)(2) (ratio Os: U approximate to 1:3 to 1:3.5) and NaSCN i n aldehydes like propanal to visible light in glassware vessels. Isola ble complexes are reduced altogether. Precipitation of U(IV) limits on going of photolyzes. Coordination voids produced by this method are su fficiently reactive that polymeric complexes form unless halocarbon qu enchers are added. This implies potential applications of UO22+ in pho toassisted syntheses of precatalysts or in halocarbon destruction.