Spin crossover iron(II) complexes of (2-methylimidazol-4-yl)methylideneamino-2-ethylpyridine: 2 : 1 [Fe(HLMe)(2)](PF6)(2) and 3 : 1 [Fe(HLMe)(3)](PF6)(2)

Arata S; Hamamatsu T; Sato T; Iihoshi T; Matsumoto N; Iijima S

Chemistry Letters, Vol.36, No.6, 778-779, 2007

DOI10.1246/cl.2007.778 Export Citation

Spin crossover iron(II) complexes of (2-methylimidazol-4-yl)methylideneamino-2-ethylpyridine: 2 : 1 [Fe(HLMe)(2)](PF6)(2) and 3 : 1 [Fe(HLMe)(3)](PF6)(2)

Arata S, Hamamatsu T, Sato T, Iihoshi T, Matsumoto N, Iijima S

(2-Methylimidazol-4-yl)methylideneamino-2-ethylpyridine (HLMe) functions as either bidentate or tridentate ligand to Fell ion to produce the 2:1 complex [Fe(HLMe)(2)](PF6)(2) (1) and the 3:1 complex [Fe(HLMe)(3)](PF6)(2) (2). Both complexes showed spin crossover (SCO) behaviors; 1 exhibited a gradual SCO between HS and (HS + LS)/2 and 2 showed an one-step abrupt SCO between HS and LS.