A Very-High-Spin Molecule: Preparation, Characterization and Magnetic Properties of an FeIII–GdIII Complex with an S = 12/2 Ground State

✍ Scribed by Jean-Pierre Costes; Arnaud Dupuis; Jean-Pierre Laurent

• Publisher: John Wiley and Sons
• Year: 1998
• Tongue: English
• Weight: 122 KB
• Volume: 1998
• Category: Article
• ISSN: 1434-1948
• DOI: 10.1002/(sici)1099-0682(199810)1998:10<1543::aid-ejic1543>3.0.co;2-t

✦ Synopsis

The tripodal ligand tris[4-(2-hydroxy-3-methoxyphenyl)-3-compound has been characterized by chemical analysis and mass spectrometry (FAB + ). Its magnetic properties have been aza-3-buten]amine (H 3 vantren) offers two coordination sites, an inner N 4 O 3 one and an outer O 6 one. Therefore, it can investigated and show that the (Fe,Gd) pair (2) exhibits a ferromagnetic interaction of low intensity [J = 0.50(5) cm -1 ]. successively encapsulate two different metal ions, a 3d(III) ion in the N 4 O 3 site, and a 4f(III) ion in the O 6 site. This The resulting S = 12/2 ground state is, most probably, the highest spin ground state that can be expected for a general route to homo-and heterodinuclear complexes has been exploited for the preparation of the vantrenFeGd(NO 3 ) 3 dinuclear complex. • 2 H 2 O complex (2), featuring a high-spin iron centre. This