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Issue 70, 2020
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Phase transformation induced mechanochromism in a platinum salt: a tale of two polymorphs

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Abstract

Red crystals of [Pt(tpy)Cl]NO3·HNO3 show mechanochromic behaviour turning yellow when pressure is applied. The electronic character and spectroscopic signature of the red and yellow polymorphs change as a result of slipping of the molecular stacking planes in the solid state. The slippage alters the Pt⋯Pt intermolecular distances from a linear stacked motif with <3.5 Å separations in the red polymorph to a less stacked motif of alternating short intradimer and long interdimer interactions in the yellow polymorph.

Graphical abstract: Phase transformation induced mechanochromism in a platinum salt: a tale of two polymorphs

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Article information


Submitted
14 May 2020
Accepted
20 Jul 2020
First published
21 Jul 2020

Chem. Commun., 2020,56, 10175-10178
Article type
Communication

Phase transformation induced mechanochromism in a platinum salt: a tale of two polymorphs

A. E. Norton, M. K. Abdolmaleki, J. Liang, M. Sharma, R. Golsby, A. Zoller, J. A. Krause, W. B. Connick and S. Chatterjee, Chem. Commun., 2020, 56, 10175
DOI: 10.1039/D0CC03436C

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