title: Interactions of Trivalent Lanthanide Cations with a New Hexadentate Di-Schiff Base: New Lanthanide(III) Complexes from (NE,N'E)-2,2'-(ethane-1,2-diylbis(oxy))bis(N-(pyridin-2-ylmethylene)ethanamine).
abstract: The novel lanthanide(III) complexes [Ln(NO(3))(2)L](NO(3)).3MeOH (Ln = La 1, Pr 2) and [Ln(NO(3))(3)L](NO(3)).2MeOH (Ln = Gd 3, Yb 4), where L = (NE,N'E)-2,2'-(ethane-1,2-diylbis(oxy))bis(N-(pyridin-2-ylmethylene)ethanamine), have been obtained by direct reaction of the Schiff base ligand and the corresponding hydrated lanthanide(III) nitrates in methanol. All complexes were characterized spectroscopically and thermogravimetrically. Complex 4 was also characterized with crystallographic studies: orthorhombic P2(1)2(1)2(1), a = 10.6683(14), b = 13.4752(15), c = 19.3320(26) A. In the molecular structure of 4, Yb(III) is surrounded by all donor atoms of the Schiff base (four nitrogen and two oxygen atoms) and four oxygen atoms belonging to two bidentate chelating nitrato ligands.
authors.affiliation: Department of Chemistry, University of Ioannina, 451 10 Ioannina, Greece.
authors.forename: Mantha
authors.initials: M
authors.lastname: Tsiouri
authors.forename: Konstantina
authors.initials: K
authors.lastname: Skorda
authors.forename: Christos
authors.initials: C
authors.lastname: Papadimitriou
authors.forename: Yang
authors.initials: Y
authors.lastname: Li
authors.forename: J Derek
authors.initials: JD
authors.lastname: Woollins
authors.forename: John C
authors.initials: JC
authors.lastname: Plakatouras