Phase transformation induced mechanochromism in a platinum salt: a tale of two polymorphs.
- Resource Type
- Article
- Authors
- Norton, Amie E.; Abdolmaleki, Mahmood Karimi; Liang, Jiamin; Sharma, Malvika; Golsby, Robert; Zoller, Ann; Krause, Jeanette A.; Connick, William B.; Chatterjee, Sayandev
- Source
- Chemical Communications. 9/11/2020, Vol. 56 Issue 70, p10175-10178. 4p.
- Subject
- *PLATINUM
*SALT
*CRYSTALS
*BEHAVIOR
*DISTANCES
- Language
- ISSN
- 1359-7345
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. [ABSTRACT FROM AUTHOR]