Crystal Structures and Spin Crossover of Iron(III) Cocrystal Formed via Halogen Bonding

Crystal Structures and Spin Crossover of Iron(III) Cocrystal Formed via Halogen Bonding

Spin crossover iron(III) compounds containing the tridentate Schiff base ligand and its cocrystal, [Fe(acpa)2]I (1) and [Fe(acpa)2][1,3,5-TITFB(I−)] (2) (Hacpa = N-(1-acetyl-2-propylidene)(2-pyridylmethyl) amine, 1,3,5-TITFB = 1,3,5-triiodotrifluorobenzene), were synthesized and their crystal struct...

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Veröffentlicht in:Chemistry letters 2021-06, Vol.50 (6), p.1259-1262
Hauptverfasser: Zenno, Hikaru, Akiyoshi, Ryohei, Nakamura, Masaaki, Sekine, Yoshihiro, Hayami, Shinya
Format: Artikel
Sprache:eng
Schlagworte:
Crossovers
Crystal structure
Crystals
Hysteresis loops
Imines
Iron
Magnetic properties
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Zusammenfassung:Spin crossover iron(III) compounds containing the tridentate Schiff base ligand and its cocrystal, [Fe(acpa)2]I (1) and [Fe(acpa)2][1,3,5-TITFB(I−)] (2) (Hacpa = N-(1-acetyl-2-propylidene)(2-pyridylmethyl) amine, 1,3,5-TITFB = 1,3,5-triiodotrifluorobenzene), were synthesized and their crystal structures and magnetic properties characterized in detail. 1 exhibits abrupt spin crossover (SCO) behavior (T1/2 = 182 K) with thermal hysteresis loop being 23 K while showing gradual SCO behavior for 2 without thermal hysteresis loop.
ISSN:0366-7022
1348-0715
DOI:10.1246/cl.210101