Tilen Knaflič (Avtor), Mateja Žnidarič (Avtor), Franc Perdih (Avtor), Marko Trampuž (Avtor), Zvonko Jagličić (Avtor), Zdenko Časar (Avtor), Denis Arčon (Avtor)

Povzetek

Intensively researched iron meso-tetraphenylporphyrin (FeTPP) complexes are central to the functionalities of many biological systems while at the same time they possess intriguing magnetic properties. Here we report on the synthesis and structural characterization of FeTPP complexes with axial tetrahydrofuran (THF) ligand and different non-coordinating counter anions. Structurally, the most interesting feature of these complexes is the stretching of the distance between the iron(III) and the oxygen atom of the THF ligand for different counter anions. This parameter affects the magnetic anisotropy of FeTPP as studied here with magnetic susceptibility, χ$_m$, and X-band electron paramagnetic resonance (EPR). Both magnetic probes are consistent with the iron(III) in its high-field state S = 5/2. Simulations of temperature dependencies of χ$_m$ and EPR spectra show that the zero-field splitting magnetic anisotropy parameter D decreases with the tetragonal elongation of the hexa-coordinated iron(III) geometry, which is qualitatively discussed within the ligand field theory.

Ključne besede

magnetic materials;X-ray diffraction;electron paramagnetic resonance (EPR);

Podatki

Jezik: Angleški jezik
Leto izida:
Tipologija: 1.01 - Izvirni znanstveni članek
Organizacija: UL FKKT - Fakulteta za kemijo in kemijsko tehnologijo
UDK: 538.9
COBISS: 156769539 Povezava se bo odprla v novem oknu
ISSN: 0022-3697
Št. ogledov: 24
Št. prenosov: 5
Ocena: 0 (0 glasov)
Metapodatki: JSON JSON-RDF JSON-LD TURTLE N-TRIPLES XML RDFA MICRODATA DC-XML DC-RDF RDF

Ostali podatki

Vrsta dela (COBISS): Članek v reviji
Strani: str. 1-10
Zvezek: ǂVol. ǂ181
Čas izdaje: 2023
DOI: 10.1016/j.jpcs.2023.111514
ID: 21736147