Correlation between the Stoichiometry and the Bistability of Electronic States in Valence‐Tautomeric RbxMn[Fe(CN)6]y·zH2O Complexes
Correlation between the Stoichiometry and the Bistability of Electronic States in Valence‐Tautomeric RbxMn[Fe(CN)6]y·zH2O Complexes
复制标题
价互变异构RbxMn[Fe(CN)6]y·zH2O配合物的化学计量与电子态双稳定性的相关性
DOI:
10.1002/ejic.200601023
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发表时间:
2007
影响因子:
2.3
通讯作者:
A. Bousseksou
中科院分区:
文献类型:
--
作者:
Saioa Cobo;R. Fernández;L. Salmon;G. Molnár;A. Bousseksou
A series of Prussian blue analogues, RbxMn[Fe(CN)6]y·zH2O with different stoichiometries have been synthesized. Elemental analyses reveal a quasilinear decrease in x and y when z increases. Some of these samples present a first-order phase transition between the MnII–FeIII and MnIII–FeII electronic states with large thermal hysteresis loops observed in the magnetic susceptibility. The phase-transition temperatures correlate with the stoichiometry, but quantitative predictions cannot be made because of the disordered nature of the compounds. Contrary to previous literature reports, calorimetric and Raman spectroscopic measurements reveal that the charge-transfer phase transition is accompanied by a significant entropy change, ΔS = 48–59 J K–1 mol–1, of mainly vibrational origin. In addition to the thermal phase transition, Raman spectra also show that below ca. 120 K a photoinduced MnIII–FeII to MnII–FeIII conversion occurs in certain stoichiometries.(© Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2007)
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影响因子:
3.7
作者:
H. Tokoro;S. Miyashita;K. Hashimoto;S. Ohkoshi
通讯作者:
H. Tokoro;S. Miyashita;K. Hashimoto;S. Ohkoshi
影响因子:
15
作者:
Escax, V;Bleuzen, A;Verdaguer, M
通讯作者:
Verdaguer, M
DOI:
--
发表时间:
2003
期刊:
Phys. Rev. B 68
影响因子:
--
作者:
Y.;Moritomo;et. al.
通讯作者:
et. al.
DOI:
--
发表时间:
2008
期刊:
影响因子:
--
作者:
R. Fukaya ;K. Ohki;M. Nagajima;H. Tokoro;S. Ohkoshi;T. Suemoto
通讯作者:
T. Suemoto