The 1-D polymeric structure of the [Fe(NH2trz)3](NO3)2*nH2O (with n = 2) spin crossover compound proven by single crystal investigations

Arnaud Grosjean (1) , Nathalie Daro (1) , Brice Kauffmann (2) , Abdellah Kaiba (1) , Jean-François Létard (1) , Philippe Guionneau (1)

1 ICMCB - Institut de Chimie de la Matière Condensée de Bordeaux
2 IECB - Institut Européen de Chimie et Biologie

The first single crystal-based description of a spin transition compound from the patented [Fe(Rtrz)₃]X₂*nH₂O family is reported, properly the compound with Rtrz = 4-amino-1,2,4-triazole, X = NO₃ and n = 2. This study definitively proves the 1-D polymeric nature of the crystal structure and allows a description of the [Fe(Rtrz)₃] chains, as well as of the anions and water implementation within the crystal lattice opening the possibility of subsequent investigations of the structure-property correlation within this peculiar family of spin transition compounds.

Mots clés: Spin transition; Chemical compounds; Crystal structure; Single crystal

Domaines: Matériaux

Arnaud Grosjean, Nathalie Daro, Brice Kauffmann, Abdellah Kaiba, Jean-François Létard, et al.. The 1-D polymeric structure of the [Fe(NH2trz)3](NO3)2*nH2O (with n = 2) spin crossover compound proven by single crystal investigations. Chemical Communications, 2011, 47 (45), pp.12382-12384. ⟨10.1039/C1CC14220H⟩. ⟨hal-00641727⟩