posted on 2006-08-07, 00:00authored byLuke E. Turner, Matthew G. Davidson, Matthew D. Jones, Holger Ott, Verena S. Schulz, Paul J. Wilson
The reaction of bismuth amides or alkoxides with phenolic ligand
precursors yields Bi complexes of aminetris(phenoxide)s, one of
which was characterized by X-ray crystallography, revealing
monomeric Bi units of the tetradentate NO3 ligand further associated
via a symmetrical toluene bridge into a bis(bismuth)toluene inverted-sandwich complex. Synthesis of the analogous Sb complex
suggests a markedly different geometric and electronic environment
at the metal center, as evidenced by the solid-state molecular
structure. Density functional theory calculations of the sandwich
bismuth arene complex indicate the presence of a weak σ*−2π
interaction.