title: Structural diversity in metal complexes with a dinucleating ligand containing carboxyamidopyridyl groups.
abstract: The synthesis of a (carboxyamido)pyridinepyrazolate (H(5)bppap) dinucleating ligand is described. Bimetallic iron and cobalt complexes of H(5)bppap ([M(II)(2)H(2)bppap](+)) showed structural differences in both their primary and secondary coordination spheres. The binding of small molecules into the preorganized ligand cavity is verified by the hydration of [Fe(II)(2)H(2)bppap](+) and [Co(II)(2)H(2)bppap](+), leading to the formation of complexes [{Co(II)(OH)}Co(II)H(3)bppap](+) and [{Fe(II)(OH)}Fe(II)H(3)bppap](+), in which one of the metal centers has a terminal hydroxo ligand.
authors.affiliation: Department of Chemistry, University of California-Irvine, 1102 Natural Science II, Irvine, California 92697, USA.
authors.forename: Gary K-Y
authors.initials: GK
authors.lastname: Ng
authors.forename: Joseph W
authors.initials: JW
authors.lastname: Ziller
authors.forename: A S
authors.initials: AS
authors.lastname: Borovik
mesh_terms: D003035:Cobalt / Q000737:chemistry*; D018360:Crystallography, X-Ray; D007501:Iron / Q000737:chemistry*; D008024:Ligands; D008958:Models, Molecular; D015394:Molecular Structure; D009942:Organometallic Compounds / Q000138:chemical synthesis / Q000737:chemistry*; D011725:Pyridines / Q000737:chemistry*; D013237:Stereoisomerism
chemical_list: D008024:Ligands; D009942:Organometallic Compounds; D011725:Pyridines; D003035:Cobalt; D007501:Iron