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Spin States of 1D Iron(II) Coordination Polymers with Redox Active TTF(py)2 as Bridging Ligand

Title data

Schönfeld, Sophie ; Hörner, Gerald ; Heinemann, Frank W. ; Hofmann, Anja ; Marschall, Roland ; Weber, Birgit:
Spin States of 1D Iron(II) Coordination Polymers with Redox Active TTF(py)2 as Bridging Ligand.
In: Zeitschrift für anorganische und allgemeine Chemie. Vol. 647 (2021) Issue 4 . - pp. 295-305.
ISSN 1521-3749
DOI: https://doi.org/10.1002/zaac.202000286

Official URL: Volltext

Abstract in another language

In this manuscript, we report the solvent‐dependent synthesis of 1D coordination polymers derived from two planar N2O2‐coordinate iron(II) complexes FeL1 and FeL2, which incorporate TTF(py)2 as a bridging bis‐monodentate ligand. The obtained 1D polymers were characterized through elemental analysis, Mössbauer spectroscopy, single crystal structure analysis for 2a·2 DMF, magnetic susceptibility measurements, X‐ray powder diffraction, cyclic voltammetry and diffuse reflectance spectroscopy, supplemented by DFT computation. The results revealed additive electronic properties of the sub‐units FeL and TTF(py)2 with only minor mutual influence. Intriguingly however, the solvent‐of‐synthesis is found to be a steering factor of the magnetic spin crossover properties of the resulting materials, yielding divergent behavior if obtained from DMF, MeCN or EtOH. This becomes strikingly evident for the magnetic properties of the DMF‐derived polymer which is found trapped in the low‐spin state in the single crystal 2a· 2 DMF, but shows a gradual spin crossover if all solvent is removed.

Further data

Item Type: Article in a journal
Refereed: Yes
Additional notes: Special Issue: Dedicated to Professor Thomas M. Klapötke on the Occasion of his 60th Birthday
Keywords: Tetrathiafulvalene; Iron(II) complex; Iron; Spin crossover; Redox active
Institutions of the University: Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Chemistry > Chair Inorganic Chemistry IV > Chair Inorganic Chemistry IV - Univ.-Prof. Dr. Birgit Weber
Result of work at the UBT: Yes
DDC Subjects: 500 Science > 540 Chemistry
Date Deposited: 26 Feb 2021 11:25
Last Modified: 26 Feb 2021 11:25
URI: https://eref.uni-bayreuth.de/id/eprint/63471