Uranium(VI) and Scandium(III) Complexes of a-Hydroxyquinoline and Derivatives

Abstract

<p> New uranium(VI) complexes of a-hydroxyquinoline ligands of formulae U02(R-Q)2 R-QH have been prepared. In these compounds, the additional liquid is likely bonded as a zwitterion. Appropriate substitution in the 2- and 7-positions lead to interesting steric effects. Some uranium(VI) complexes reported in the literature have been re-examined and found to be incorrectly formulated. </p> <p> The scandium(III) complex of a-hydroxyquinoline obtained from aqueous solution was. found to be Sc(C9H6N0) 3 •H20 and not Sc(CgH&N0) 3 •C 9H7NO as previously reported. In the absence of water, Sc (CgH&NO) 3 •C 9H7NO 'Was obtained. New scandium(III) complexes of formulae Sc(R-Q) 3 •R-QH and Sc(R-Q) 3 •H20 have been prepared. </p>