Pc. Christidis et al., TRIS (ACETYLACETONATO)(1,10-PHENANTHROLINE)-CERIUM(III) AND YLACETONATO)(1,10-PHENANTHROLINE)PRASEODYMIUM(III), Acta crystallographica. Section C, Crystal structure communications, 54, 1998, pp. 1233-1236
The crystal structures of the title compounds, [Ce(C5H7O2)(3)(C12H8N2)
], (1), and [Pr(C5H7O2)(3)(C12H8N2)], (2), have been determined. There
are two independent molecules in the asymmetric unit of (1), but only
one molecule in the asymmetric unit of (2). In both compounds, the me
tal atom is eightfold coordinated by six O and two N atoms in a slight
ly distorted square-antiprismatic arrangement. The ligands span the op
posite edges of the two square faces of the coordination antiprism. Im
portant bond-distance ranges are: Ce-O 2.434(7)-2.499(7), Ce-N 2.70(1)
-2.767(9), Pr-O 2.392(5)-2.437(6) and Pr-N 2.659 (5)-2.690 (6) Angstro
m.