Pressure-Induced Sequential Orbital Reorientation in a Magnetic Framework Material

被引：52

作者：

Halder, Gregory J. ^{[1
,3
]}

Chapman, Karena W. ^{[3
]}

Schlueter, John A. ^{[1
]}

Manson, Jamie L. ^{[2
]}

机构：

[1] Argonne Natl Lab, Div Mat Sci, Argonne, IL 60439 USA

[2] Eastern Washington Univ, Dept Chem & Biochem, Spokane, WA USA

[3] Argonne Natl Lab, Xray Sci Div, Argonne, IL 60439 USA

来源：

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION | 2011年 / 50卷 / 02期

基金：

美国国家科学基金会;

关键词：

coordination frameworks; high-pressure chemistry; Jahn-Teller distortion; magnetic properties; X-ray diffraction; THERMAL-EXPANSION; CRYSTAL; SALT;

D O I：

10.1002/anie.201003380

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Pressure-dependent isomerization: Pressure has been applied to manipulate the structure-property relationship of the copper(II)-based coordination network CuF2(H2O)2(pyz) (pyz=pyrazine). The elongated Jahn-Teller axis was found to switch sequentially from the N-Cu-N (<0.9-GPa), to the O-Cu-O (0.9-3.1-GPa), to the F-Cu-F bonds (>3.1-GPa; see picture). This orbital reordering leads to a drastic change in the magnetic properties, whereby the magnetic structure changes from two-dimensional to one-dimensional above 0.9-GPa. © 2011 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

引用

页码：419 / 421

页数：3

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