KIT | KIT-Bibliothek | Impressum | Datenschutz

Anion influence on spin state in two novel Fe(III) compounds: [Fe(5F-sal2333)]X

Sundaresan, S.; Kühne, I. A. 1; Kelly, C. T.; Barker, A.; Salley, D.; Müller-Bunz, H.; Powell, A. K. 1; Morgan, G. G.
1 Institut für Anorganische Chemie (AOC), Karlsruher Institut für Technologie (KIT)


Structural and magnetic data on two iron (III) complexes with a hexadentate Schiff base chelating ligand and Cl¯ or BPh₄¯ counterions are reported. In the solid state, the Cl¯ complex [Fe(5F-sal₂333)]Cl, 1, is high spin between 5–300 K while the BPh₄¯ analogue [Fe(5F-sal₂333)]BPh₄, 2, is low spin between 5–250 K, with onset of a gradual and incomplete spin crossover on warming to room temperature. Structural investigation reveals different orientations of the hydrogen atoms on the secondary amine donors in the two salts of the [Fe(5F-sal₂333)]⁺ cation: high spin complex [Fe(5F-sal₂333)]Cl, 1, crystallizes with non-meso orientations while the spin crossover complex [Fe(5F-sal₂333)]BPh₄, 2, crystallizes with a combination of meso and non-meso orientations disordered over one crystallographic site. Variable temperature electronic absorption spectroscopy of methanolic solutions of 1 and 2 suggests that both are capable of spin state switching in the solution.

Verlagsausgabe §
DOI: 10.5445/IR/1000090533
Veröffentlicht am 06.02.2019
DOI: 10.3390/cryst9010019
Zitationen: 15
Web of Science
Zitationen: 15
Zitationen: 15
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Anorganische Chemie (AOC)
Institut für Nanotechnologie (INT)
Publikationstyp Zeitschriftenaufsatz
Publikationsjahr 2019
Sprache Englisch
Identifikator ISSN: 2073-4352
KITopen-ID: 1000090533
HGF-Programm 43.21.04 (POF III, LK 01) Molecular Engineering
Erschienen in Crystals
Verlag MDPI
Band 9
Heft 1
Seiten Art. Nr.: 19
Vorab online veröffentlicht am 29.12.2018
Schlagwörter Fe(III) coordination complexes, hexadentate ligand, Schiff base, spin crossover, UV-Vis spectroscopy, SQUID, EPR spectroscopy
Nachgewiesen in Dimensions
Web of Science
KIT – Die Forschungsuniversität in der Helmholtz-Gemeinschaft
KITopen Landing Page