Functional Molecular Crystals from the Arylation of a Halogenoplatinum Complex: Stimuli Responsiveness, Comproportionation, and p-Bridged Dimerization

A chloroplatinum complex was arylated to obtain stimuli-responsive molecular crystals. The resulting arylplatinum complex showed polymorph-dependent emission, mechano- and thermochromic luminescence as well as comproportionation and & pi;-bridged dimerization. Simple mixing of structurally similar arylplatinum complexes at room temperature resulted in the transfer of their aryl groups (comproportionation), which allowed their mechanochromic profiles to be tuned. We also found that recrystallization of the complex afforded a dimerized product in which two platinum ions are bridged by aryl groups resulting in a very short (3.0466(10) & ANGS;) Pt-Pt distance. An arylplatinum complex that shows polymorph-dependent emission, mechano- and thermochromic luminescence, as well as comproportionation and & pi;-bridged dimerization is reported. Simple mixing of this complex with a structurally similar arylplatinum complex in solution at room temperature resulted in transfer of their aryl groups (comproportionation); this allows their mechanochromic profiles to be tuned. Recrystallization of the complex afforded a dimerized product in which two platinum ions are bridged by aryl groups resulting in a very short (3.0466(10) & ANGS;) Pt-Pt distance.image

Automated summary

A chloroplatinum complex was arylated to obtain stimuli-responsive molecular crystals that showed polymorph-dependent emission, mechano- and thermochromic luminescence, as well as comproportionation and π-bridged dimerization. Simple mixing of structurally similar arylplatinum complexes at room temperature resulted in the transfer of their aryl groups (comproportionation), allowing the tuning of their mechanochromic profiles. Recrystallization of the complex resulted in a dimerized product with a very short Pt-Pt distance bridged by aryl groups.