Preparation, properties, and crystal structure of tetraethylammonium bis(1,3-diphenylpropane-1,3-dionato)nitratodioxouranate(VI)

Abstract

The title complex has been synthesized and characterized. The crystal structure has been determined by X-ray analysis from counter data, and refined to R 0.052 for 2 085 observed reflections. Crystals are orthorhombic, space group Pn2₁a, with a= 20.384(9), b= 14.543(5), c= 12.641 (5)Å, and Z= 4. The approximately linear uranyl group is perpendicular to the equatorial plane in which four oxygen atoms from two bidentate diketonate ligands and the oxygen atom of the unidentate nitrate group occupy the corners of a quasi-regular pentagon. The structure is also discussed on the basis of i.r. and n.m.r. measurements.