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A Promising New Schiff Base-like Ligand for the Synthesis of Octahedral Iron(II) Spin Crossover Complexes

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A Promising New Schiff Base-like Ligand for the Synthesis of Octahedral Iron(II) Spin Crossover Complexes

Wolfgang Bauer, Tanja Ossiander, and Birgit Weber

Center for Integrated Protein Science Munich, Department Chemie und Biochemie,

Ludwig-Maximilians-Universit¨at M¨unchen, Butenandtstraße 5 – 13 (Haus F), 81377 M¨unchen, Germany

Reprint requests to PD Dr. Birgit Weber. Fax: (+49) 89-2180-77407.

E-mail: bwmch@cup.uni-muenchen.de

Z. Naturforsch.2010,65b,323 – 328; received November 16, 2009

Dedicated to Professor Rolf W. Saalfrank on the occasion of his 70thbirthday

A newtetradentate Schiff base-like ligand H2L (1) ((E,E)-dimethyl-2,2-[1,2-phenylenebis(amino- methylidyne)]bis[3-oxobutanoate]) was synthesised and structurally characterised. Its reaction with iron(II) acetate leads to the formation of the octahedral N2O4-coordinated complex [FeL(MeOH)2] (2). The complex is a pure high-spin (HS) compound as is evident from magnetic measurements and X-ray crystallography.

Key words:Schiff Base-like Ligand, Iron Complexes, Magnetic Properties

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