Journal Article

PreJuSER-19963

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png A Heptanuclear Iron(III) Oxo-Carboxylate Cluster

Baca, S. G. ; Botezat, O. ; Filippova, I. ; Speldrich, M. ; Jeanneau, E. ; Kögerler, P.FZJ*

2011
Wiley-VCH Weinheim

This record in other databases:  

Please use a persistent id in citations: doi:10.1002/zaac.201100021

Abstract: A new heptanuclear iron(III) oxide pivalate cluster [Fe7O4(OH)(2)(O2CCMe3)(11)(bpm)(2)(H2O)] (1) (bpm = 2,2'-bipyrimidine) has been prepared and characterized. 1 features an asymmetric {Fe7O6} framework based on two corner-sharing {Fe-4(mu(3)-O)(2)} groups, themselves comprising {Fe-3(mu(3)-O)} motifs that are formally retained from the {Fe6O4} precursor used in thesynthesis of 1. Compared to existing Fe-III oxide carboxylate clusters, the {Fe7O6} fragment in 1 exhibits an unusually high Fe:O ratio, with all seven oxygen sites efficiently mediating magnetic exchange. Correspondingly, 1 shows strong intramolecular antiferromagnetic coupling.

Keyword(s): J ; Iron (auto) ; Cluster compounds (auto) ; Carboxylate ligands (auto) ; N ligands (auto) ; Magnetic properties (auto)

Note: Financial support was provided by the German Federal Ministry of Education and Research (Grant MDA 08/022) and the Academy of Sciences of Moldova (Grant No. 09.820.05.10GF). We thank the European Commission for an IIF Marie Curie Fellowship to S. G. B. (POLY-MAG, contract no. 252984).

---

Contributing Institute(s):

1. Elektronische Eigenschaften (PGI-6)

Research Program(s):

1. Grundlagen für zukünftige Informationstechnologien (P42)
2. POLYMAG - Magnetic Coordination Cluster Polymers (252984) (252984)

Appears in the scientific report 2011

---