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Iron(II) Spin Crossover Complexes with 4,4′-Dipyridylethyne—Crystal Structures and Spin Crossover with Hysteresis

Department of Chemistry, Inorganic Chemistry IV, University of Bayreuth, Universitätsstr. 30, 95447 Bayreuth, Germany
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Academic Editors: Dawid Pinkowicz and Robert Podgajny
Molecules 2020, 25(3), 581; https://doi.org/10.3390/molecules25030581
Received: 23 December 2019 / Revised: 22 January 2020 / Accepted: 27 January 2020 / Published: 29 January 2020
(This article belongs to the Special Issue Functional Magnetic Molecular Materials)
Three new iron(II) 1D coordination polymers with cooperative spin crossover behavior showing thermal hysteresis loops were synthesized using N2O2 Schiff base-like equatorial ligands and 4,4′-dipyridylethyne as a bridging, rigid axial linker. One of those iron(II) 1D coordination polymers showed a 73 K wide hysteresis below room temperature, which, upon solvent loss, decreased to a still remarkable 30 K wide hysteresis. Single crystal X-ray structures of two iron(II) coordination polymers and T-dependent powder XRD patterns are discussed to obtain insight into the structure property relationship of those materials. View Full-Text
Keywords: spin crossover; iron; Schiff base ligand; hysteresis; cooperative interactions spin crossover; iron; Schiff base ligand; hysteresis; cooperative interactions
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MDPI and ACS Style

Dankhoff, K.; Lochenie, C.; Weber, B. Iron(II) Spin Crossover Complexes with 4,4′-Dipyridylethyne—Crystal Structures and Spin Crossover with Hysteresis. Molecules 2020, 25, 581. https://doi.org/10.3390/molecules25030581

AMA Style

Dankhoff K, Lochenie C, Weber B. Iron(II) Spin Crossover Complexes with 4,4′-Dipyridylethyne—Crystal Structures and Spin Crossover with Hysteresis. Molecules. 2020; 25(3):581. https://doi.org/10.3390/molecules25030581

Chicago/Turabian Style

Dankhoff, Katja; Lochenie, Charles; Weber, Birgit. 2020. "Iron(II) Spin Crossover Complexes with 4,4′-Dipyridylethyne—Crystal Structures and Spin Crossover with Hysteresis" Molecules 25, no. 3: 581. https://doi.org/10.3390/molecules25030581

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