Structural Investigation of the High Spin→Low Spin Relaxation Dynamics of the Porous Coordination Network [Fe(pz)Pt(CN)4]•2.6H2O

被引：31

作者：

Delgado, Teresa ^{[1
]}

Tissot, Antoine ^{[1
]}

Besnard, Celine ^{[2
]}

Guenee, Laure ^{[2
]}

Pattison, Philip ^{[3
,4
]}

Hauser, Andreas ^{[1
]}

机构：

[1] Univ Geneva, Dept Chim Phys, CH-1211 Geneva, Switzerland

[2] Univ Geneva, Lab Cristallog, CH-1211 Geneva, Switzerland

[3] Ecole Polytech Fed Lausanne, Lab Cristallog, CH-1015 Lausanne, Switzerland

[4] ESRF, Swiss Norwegian Beamline, F-38043 Grenoble, France

来源：

CHEMISTRY-A EUROPEAN JOURNAL | 2015年 / 21卷 / 09期

基金：

瑞士国家科学基金会;

关键词：

cooperative effects; LIESST; organic electronics; relaxation dynamics; spin crossover; X-ray diffraction studies; X-RAY; CROSSOVER COMPLEX; STATE; TRANSITION; TEMPERATURE; BEHAVIOR;

D O I：

10.1002/chem.201405405

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

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.

引用

页码：3664 / 3670

页数：7

共 50 条

[1]

Agusti G., 2009, ANGEW CHEM, V121, P9106

[2] Oxidative Addition of Halogens on Open Metal Sites in a Microporous Spin-Crossover Coordination Polymer [J].