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Dr. Gregory J. Halder, Dr. Karena W. Chapman, Dr. John A. Schlueter and Dr. Jamie L. Manson Pressure-Induced Sequential Orbital Reorientation in a Magnetic Framework Material Angewandte Chemie International Edition 50

Article first published online: 10 SEP 2010 | DOI: 10.1002/anie.201003380

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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[BOND]Cu[BOND]N (<0.9 GPa), to the O[BOND]Cu[BOND]O (0.9–3.1 GPa), to the F[BOND]Cu[BOND]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.

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