Title |
Reversible Pressure‐Controlled Depolymerization of a Copper(II)‐Containing Coordination Polymer
|
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Published in |
Chemistry - A European Journal, August 2017
|
DOI | 10.1002/chem.201703115 |
Pubmed ID | |
Authors |
Jack K. Clegg, Aidan J. Brock, Katrina A. Jolliffe, Leonard F. Lindoy, Simon Parsons, Peter A. Tasker, Fraser J. White |
Abstract |
A unique pressure-induced Cu-N bond breaking/bond forming reaction is reported. The variation of pressure on a single crystal of a one-dimensional copper(II)-containing coordination polymer (Cu2L2(1-methylpiperazine)2]n, where H2L is 1,1'-(1,3-phenylene)-bis(4,4-dimethylpentane-1,3-dione)), was monitored using single crystal X-ray diffraction with the aid of a diamond anvil cell. At a very low elevated pressure (~0.05 GPa) a remarkable reversible phase change was observed. The phase change results in the depolymerization of the material through the cleavage and formation of axial Cu-N bonds as well as "ring flips" of individual axially coordinated 1-methylpiperazine ligands. Overall, the pressure-induced phase change is associated with a surprising (and non-intuitive) shift in structure - from a 1-dimensional coordination polymer to a discrete dinuclear complex. |
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