The behavior of two classes of dynamic crystals, crystals whose properties change in response to an external stimulus will be discussed. Colorless, blue luminescent crystals of the gold box, [Au6(Triphos)4Cl](SbF6)57(CH3C6H5) (Triphos is Ph2P(CH2)2PPh(CH2)2PPh2), become orange luminescent upon grinding. X-ray crystal structures of both the starting box and the product, a chloro-bridged helicate have been determined. The process involves a significant amount of bond making and breaking, yet a rather simple process can account for the chemical change that occurs within the solid. The second part of the talk will focus upon crystals of the two-coordinate cation, [AuI(cyclohexyl isocyanide)2]+. The structure and properties of crystals containing [AuI(cyclohexyl isocyanide)2]+ depend significantly upon the non-coordinating anion present. The influence of that anion on the sensitivity of crystals to organic vapors, temperature, and mechanical pressure will be discussed.

Dynamic crystals whose luminescence respond to external stimulus

ACS Spring Meeting 2021

The official archive and repository for all ACS Meetings & Expositions abstracts and select posters or presentations.