Thermal and Light-Activated Spin Crossover in Iron(III) qnal Complexes - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue European Journal of Inorganic Chemistry Année : 2020

Thermal and Light-Activated Spin Crossover in Iron(III) qnal Complexes

Résumé

Three iron(III) complexes, [Fe(qnal)2]Y {qnal = 1‐[(8‐quinolinylimino)methyl]‐2‐naphthalenolate; Y = NO3 1, BPh4·CH2Cl2 2, NCS 3} have been prepared to explore anion effects in spin crossover systems. Structural studies on 2 reveal supramolecular chains formed by π–π and C–H···π interactions between the [Fe(qnal)2]+ cations. Magnetic susceptibility measurements show the onset of spin crossover in 1 above 200 K, while complete spin crossover is observed in 2 and 3 with T1/2 = 285 and 340 K, respectively. Unusually, 2 also undergoes light‐induced excited spin state trapping (LIESST) at 980 nm with ca. 65 % efficiency and T(LIESST) = 25 K and reverse‐LIESST at 660 nm with full reversibility over many cycles. The results highlight the important influence that the anion has on thermal and light‐activated spin crossover properties.
Fichier principal
Vignette du fichier
2020-043.pdf (1.29 Mo) Télécharger le fichier
Origine : Fichiers produits par l'(les) auteur(s)
Loading...

Dates et versions

hal-02569914 , version 1 (08-09-2020)

Identifiants

Citer

Warisa Thammasangwan, Phimphaka Harding, Shane G. Telfer, Adil Alkaş, Wasinee Phonsri, et al.. Thermal and Light-Activated Spin Crossover in Iron(III) qnal Complexes. European Journal of Inorganic Chemistry, 2020, 2020 (14), pp.1325-1330. ⟨10.1002/ejic.202000115⟩. ⟨hal-02569914⟩
89 Consultations
55 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More