Figure 5.
(a) Mössbauer spectra of the LS compound [Fe(phen)3]X2 recorded over the temperature range 300–5 K. (b) Perspective crystal structures of [Fe(phen)3]2+ (top) and [Fe(phen)2(NCS)2] (bottom). (c) Temperature-dependent Mössbauer spectra of [Fe(phen)2(NCS)2] indicating the thermally induced HS↔LS spin transition around 175 K [79] (Reproduced with permission from [36]. Copyright 2012 Wiley-VCH Verlag GmbH & Co. KGaA).