Tris(N,N'-diisopropyl-benzamidinato)cerium(III).

ABSTRACT: The title compound, [Ce(C(13)H(19)N(2))(3)], was obtained in moderate yield (67%) by treatment of anhydrous cerium trichloride with three equivalents of Li[PhC(N(i)Pr)(2)] in tetra-hydro-furan. It is the first homoleptic lanthanide complex of this amidinate ligand. The central Ce(III) ion is coordinated by three chelating benzamidinate anions in a distorted octa-hedral fashion, with Ce-N distances in the narrow range 2.482 (2)-2.492 (2) Å. The dihedral angles between the phenyl rings and the chelating N-C-N units are in the range 73.3-87.9°, thus preventing conjugation between the two π-systems. The mol-ecule is located on a twofold rotation axis, and one of the phenyl rings is equally disordered over two alternative symmetry-equivalent positions around this axis.

SUBMITTER: Drose P 

PROVIDER: S-EPMC3009107 | biostudies-literature | 2010 Oct

REPOSITORIES: biostudies-literature