title: Lanthanide(III) di- and tetra-nuclear complexes supported by a chelating tripodal tris(amidate) ligand.
abstract: Syntheses, structural, and spectroscopic characterization of multinuclear tris(amidate) lanthanide complexes is described. Addition of K3[N(o-PhNC(O)(t)Bu)3] to LnX3 (LnX3 = LaBr3, CeI3, and NdCl3) in N,N-dimethylformamide (DMF) results in the generation of dinuclear complexes, [Ln(N(o-PhNC(O)(t)Bu)3)(DMF)]2(μ-DMF) (Ln = La (1), Ce (2), Nd(3)), in good yields. Syntheses of tetranuclear complexes, [Ln(N(o-PhNC(O)(t)Bu)3)]4 (Ln = Ce (4), Nd(5)), resulted from protonolysis of Ln[N(SiMe3)2]3 (Ln = Ce, Nd) with N(o-PhNCH(O)(t)Bu)3. In the solid-state, complexes 1-5 exhibit coordination modes of the tripodal tris(amidate) ligand that are unique to the 4f elements and have not been previously observed in transition metal systems.
authors.forename: Jessie L
authors.initials: JL
authors.lastname: Brown
authors.forename: Matthew B
authors.initials: MB
authors.lastname: Jones
authors.forename: Andrew J
authors.initials: AJ
authors.lastname: Gaunt
authors.forename: Brian L
authors.initials: BL
authors.lastname: Scott
authors.affiliation: §Department of Chemistry, Emory University, Atlanta, Georgia 30322, United States.
authors.forename: Cora E
authors.initials: CE
authors.lastname: MacBeth
authors.forename: John C
authors.initials: JC
authors.lastname: Gordon