Structural Investigation of the High Spin -> Low Spin Relaxation Dynamics of the Porous Coordination Network [Fe(pz)Pt(CN)(4)]center dot 2.6H(2)O

The Hoffman-type coordination compound [Fe(pz)Pt(CN)(4)]2.6H(2)O (pz=pyrazine) shows a cooperative thermal spin transition at around 270K. 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 10K in a microcrystalline powder. Time-resolved measurements evidence that the HSLS relaxation proceeds by a two-step mechanism: a random HSLS conversion at the beginning of the relaxation is followed by a nucleation and growth process, which proceeds until a quantitative HSLS transformation has been reached.


Published in:
Chemistry-A European Journal, 21, 9, 3664-3670
Year:
2015
Publisher:
Weinheim, Wiley-Blackwell
ISSN:
0947-6539
Keywords:
Laboratories:




 Record created 2015-05-29, last modified 2018-01-28


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