Extremely Slow Thermally‐Induced Spin Crossover in the Two‐Dimensional Network [Fe(bbtr)3](BF4)2
Maria Książek,
Marek Weselski,
Marcin Kaźmierczak
et al.
Abstract:Cooling [Fe(bbtr)3](BF4)2 (bbtr=1,4‐di(1,2,3‐triazol‐1‐yl)butane) triggers very slow spin crossover below 80 K (T1/2↓ = 76 K). The spin crossover (SCO) is accompanied by a hysteresis loop (T1/2↑ = 89 K). In contrast to isostructural perchlorate analogue [Fe(bbtr)3](ClO4)2 in which spin crossover during cooling is preceded by phase transition at TPT=126 K in tetrafluoroborate phase transition does not occur to the beginning of spin crossover (80 K). Studies of mixed crystals [Fe(bbtr)3](BF4)2(1‐x)(ClO4)2x (0.5… Show more
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