In:
Angewandte Chemie, Wiley, Vol. 133, No. 19 ( 2021-05-03), p. 10631-10635
Abstract:
The production of photo‐switchable molecular nanomagnets with substantial coercivity, which is indispensable for information storage and process applications, is challenging. Introducing photo‐responsive spin‐crossover units provides a feasible means of controlling the magnetic anisotropy, interactions, and overall nanomagnet properties. Herein, we report a cyanide‐bridged chain 1⋅12H 2 O ({[( Pz Tp)Fe III (CN) 3 ] 2 Fe II (Pmat) 2 } n ⋅12 H 2 O) generated by linking the Fe II ‐based spin‐crossover unit with the [( Pz Tp)Fe(CN) 3 ] − ( Pz Tp: tetrakis(pyrazolyl)borate) building block in the presence of asymmetric ditopic ligand Pmat ((4‐pyridine‐4‐yl)methyleneamino‐1,2,4‐triazole). Structural characterization revealed that the introduction of this asymmetric ligand led to a distorted coordination environment of Fe II ions, which were equatorially coordinated by four cyanide N atoms, and apically coordinated by one pyridine N atom and one triazole N atom. Upon 808‐nm light irradiation, 1⋅12H 2 O underwent photoinduced spin‐crossover and exhibited single‐chain magnet behavior with a coercive field of up to 1.3 T. This represents a 3d‐based photoinduced single‐chain magnet exhibiting pronounced hysteresis.
Type of Medium:
Online Resource
ISSN:
0044-8249
,
1521-3757
DOI:
10.1002/ange.v133.19
DOI:
10.1002/ange.202017249
Language:
English
Publisher:
Wiley
Publication Date:
2021
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