Preparation and characterization of (Co(acetylacetonato)(diamine or 2,2'-bipyridyl)(aminoalkylphosphine))2+. Crystal structure of (+)5C3D1-.LAMBDA.-fac(N)-(acetylacetonato){(1R,2R)-1,2-cyclohexanediamine}{(2-aminoethyl)diphenylphosphine}cobalt(III) perchlorate, (Co(C5H7O2)(C6H14N2)(C14H16NP))(ClO4)2.

Nine new cobalt(III) complexes of the types, [Co(acac)(L)(edpp)]2+ (L=ethylenediamine(en), (1R,2R)-1,2-cyclohexanediamine(RR-chxn), 2,2′-bipyridyl(bpy)), [Co(acac)(L′)(empp)]2+ (L′=en, bpy), and structurally related [Co(acac)(bpy)(en)]2+ were prepared and resolved into optical isomers, where acac, edpp, and empp denote an acetylacetonate ion, (2-aminoethyl)diphenylphosphine, and (2-aminoethyl)methylphenylphosphine, respectively. The molecular structure of (+)531CD-[Co(acac)(RR-chxn)(edpp)](ClO4)2 was determined by single-crystal X-ray analysis. Crystal data; monoclinic, P21, a=19.562(3)A, b=16.882(1)A, c=9.696(1)A, β=91.22(1)°, V=3201.3(6)A3, Z=4. Three nitrogen donor atoms in the complex ion are arranged in the facial mannar (fac(N)) and the absolute configuration of the complex ion is Λ. The structures of other complexes were assigned by comparing the 1H NMR and circular dichroism spectra with those of the fac(N)-Λ-[Co(acac)(RR-chxn)(edpp)]2+ complex. The complexes containing a 1,2-diamine yielded selec...