Structural Investigation of the High Spin→Low Spin Relaxation Dynamics of the Porous Coordination Network [Fe(pz)Pt(CN)<sub>4</sub>]⋅2.6 H<sub>2</sub>O

Delgado Perez, Maria Teresa; Tissot, Antoine Michel; Besnard, Céline; Guenee, Laure; Pattison, Philip; Hauser, Andreas

doi:10.1002/chem.201405405

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Title		Structural Investigation of the High Spin→Low Spin Relaxation Dynamics of the Porous Coordination Network [Fe(pz)Pt(CN)₄]⋅2.6 H₂O
Authors		Delgado Perez, Maria Teresa Tissot, Antoine Michel Besnard, Céline Guenee, Laure Pattison, Philip Hauser, Andreas
Published in		Chemistry - A European Journal. 2015, vol. 21, no. 9, p. 3664-3670
Abstract		The Hoffman-type coordination compound [Fe(pz)Pt(CN)4]⋅2.6 H2O (pz=pyrazine) shows a cooperative thermal spin transition at around 270 K. Synchrotron powder X-Ray diffraction studies reveal that a quantitative photoinduced conversion from the low-spin (LS) state into the high-spin (HS) state, based on the light-induced excited spin-state trapping effect, can be achieved at 10 K in a microcrystalline powder. Time-resolved measurements evidence that the HS→LS relaxation proceeds by a two-step mechanism: a random HS→LS conversion at the beginning of the relaxation is followed by a nucleation and growth process, which proceeds until a quantitative HS→LS transformation has been reached.
Keywords		Cooperative effects — LIESST — Organic electronics — Relaxation dynamics — Spin crossover — X-ray diffraction studies
Identifiers		DOI: 10.1002/chem.201405405
Full text		Article (Published version) (617 Kb) - Limited access to UNIGE
Structures		Faculté des sciences / Section de chimie et biochimie / Département de chimie physique
Research group		Groupe Hauser
Citation (ISO format)		DELGADO PEREZ, Maria Teresa et al. Structural Investigation of the High Spin→Low Spin Relaxation Dynamics of the Porous Coordination Network [Fe(pz)Pt(CN)₄]⋅2.6 H₂O. In: Chemistry - A European Journal, 2015, vol. 21, n° 9, p. 3664-3670. doi: 10.1002/chem.201405405 https://archive-ouverte.unige.ch/unige:48201