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)
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The novel lanthanide(III) complexes [Ln(NO3)(2)L](NO3)center dot 3MeOH (Ln = La 1, Pr 2) and [Ln(NO3)(3)L](NO3)center dot 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) angstrom. 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.
Tsiouri , M , Skorda , K , Papadimitriou , C , Li , Y , Woollins , J D & Plakatouras , J C 2010 , ' 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) ' Bioinorganic Chemistry and Applications , vol 2010 , 613140 . DOI: 10.1155/2010/613140
Bioinorganic Chemistry and Applications
Copyright © 2010 Mantha Tsiouri et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
This research was cofunded by the European Union in the framework of the program “Heraklitos” of the “Operational Program for Education and Initial Vocational Training” of the 3rd Community Support Framework of the Hellenic Ministry of Education, funded by 25% from national sources and by 75% from the European Social Fund (ESF).
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