The area of mixed ligand complexes of the group 2 metals is fairly undeveloped. This work describes the synthesis of mixed ligand complexes of the heavier group 2 metals stabilized by a novel, asymmetric, and very bulky β-diketiminato ligand (2,4,6- Me 3 C 6 H 3 )NC( t Bu)CH 2 C( t Bu)N(2,6- i Pr 2 C 6 H 3 )], LAr'Ar '' . The ligand is coordinated in a η 5 -fashion about the metal centers. In addition, a Ba complex with a less bulky β-diketiminato ligand having an ethyl group at each nitrogen atom was also prepared. This complex forms a dimeric structure that adapts a μ-η 2 :η 5 coordination mode on the metal center. This complex, however, was not volatile under sublimation conditions. All complexes have been prepared and characterized by spectral and analytical methods, as well as X-ray crystallography.
