title: Three yttrium crotonate complexes with diimines.
abstract: The synthesis and crystal structures of three new yttrium crotonate (crot) compounds, associated with three different nitrogenous bases, namely 1,10-phenanthroline (phen), 4-methyl-1,10-phenanthroline (mphen) and 2,2'-bipyridylamine (bpa), are presented. All three compounds organize as centrosymmetric dimers, to give tetra-micro-crotonato-bis[crotonato(1,10-phenanthroline)yttrium(III)] dihydrate, [Y(2)(C(4)H(5)O(2))(6)(C(12)H(8)N(2))(2)].2H(2)O or [Y(crot)(3)(phen)](2).2H(2)O, (I), tetra-micro-crotonato-bis[crotonato(4-methyl-1,10-phenanthroline)yttrium(III)] dihydrate, [Y(2)(C(4)H(5)O(2))(6)(C(13)H(10)N(2))(2)].2H(2)O or [Y(crot)(3)(mphen)](2).2H(2)O, (II), and tetra-micro-crotonato-bis[diaqua(crotonato)yttrium(III)] 2,2'-bipyridylamine tetrasolvate, [Y(2)(C(4)H(5)O(2))(6)(H(2)O)(4)].4C(10)H(9)N(3) or [Y(crot)(3)(aq)(2)](2).4(bpa), (III). Complexes (I) and (II) are isomorphous, with the bases acting as chelating ligands. In complex (III), the coordination sphere is built up of carboxylate and aqua ligands, with the non-coordinated diimine acting as included solvent.
authors.affiliation: Facultad de Ciencias Químicas y Farmacéuticas, Universidad de Chile, Casilla 233, Santiago, Chile. aatria@ciq.uchile.cl
authors.forename: Ana María
authors.initials: AM
authors.lastname: Atria
authors.forename: Juan Carlos
authors.initials: JC
authors.lastname: Muñoz
authors.forename: Andrés
authors.initials: A
authors.lastname: Soto
authors.forename: María Teresa
authors.initials: MT
authors.lastname: Garland
authors.forename: Ricardo
authors.initials: R
authors.lastname: Baggio