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Abstract.A coupling reaction between pyridine and dichloromethane has been observed in the presence of uranyl chloride and a base. The X-ray structure of the complex bis[1,1'-methylenebis(pyridinium)]-

The extraction efficiency of some perfluorinated phenols for the removal of Cs + and Sr 2+ from aqueous solutions is reported. The perfluorinated phenols C 6 F 5 OH and 2,3,5,6-C 6 F 4 HOH have been shown to extract 90 Sr 2+ or Cs + from aqueous solutions into a 100 : 1 mixture of toluene and pyridine in reasonable efficiencies, using radio-tracer and ICP-OES techniques. Additionally uranium, 59 Fe 3+ {as a model for Pu(IV)} and Eu 3+ {as a model for Am(III)} were investigated, with only iron not being successfully extracted.