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Synthesis, Structure, and Photomagnetic Properties of a Hydrogen-Bonded Lattice of [Fe(bpp)2]2+ Spin-Crossover Complexes and Nicotinate Anions

Instituto de Ciencia Molecular, Universitat de València, P.O. Box 22085, 46071-Valencia, Spain
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Crystals 2018, 8(11), 439; https://doi.org/10.3390/cryst8110439
Received: 3 November 2018 / Revised: 14 November 2018 / Accepted: 19 November 2018 / Published: 21 November 2018
(This article belongs to the Special Issue Synthesis and Applications of New Spin Crossover Compounds)
In this paper, we report on the synthesis, crystal structure, and photomagnetic properties of the spin-crossover salt of formula [Fe(bpp)2](C6H4NO2)2·4H2O (1·4H2O) (bpp = 2,6-bis(pyrazol-3-yl)pyridine; C6H4NO2 = nicotinate anion). This compound exhibits a 3D supramolecular architecture built from hydrogen bonds between iron(II) complexes, nicotinate anions, and water molecules. As synthesized, the hydrated material is low-spin and desolvation triggers a low-spin (LS) to high-spin (HS) transformation. Anhydrous phase 1 undergoes a partial spin crossover (T1/2= 281 K) and a LS to HS photomagnetic conversion with a T(LIESST) value of 56 K. View Full-Text
Keywords: spin-crossover; LIESST effect; hydrogen bonding; π-π interactions spin-crossover; LIESST effect; hydrogen bonding; π-π interactions
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MDPI and ACS Style

Jornet-Mollá, V.; Giménez-Saiz, C.; Romero, F.M. Synthesis, Structure, and Photomagnetic Properties of a Hydrogen-Bonded Lattice of [Fe(bpp)2]2+ Spin-Crossover Complexes and Nicotinate Anions. Crystals 2018, 8, 439.

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