Seki, Tomohiro; Mashimo, Takaki; Ito, Hajime published the artcile< Anisotropic strain release in a thermosalient crystal: correlation between the microscopic orientation of molecular rearrangements and the macroscopic mechanical motion>, COA of Formula: C19H16O, the main research area is anisotropic strain thermosalient crystal structure microscopic orientation.
The salient effect, which refers to a jumping phenomenon of org and organometallic mol. crystals typically triggered by phase transitions in response to external stimuli, has been investigated intensively in the last five years. A challenging topic in this research area is the question of how to characterize the release of microscopic strain accumulated during phase transitions, which generates macroscopic mech. motion. Herein, we describe the thermosalient effect of the triphenylethenyl gold 4-chlorophenyl isocyanide complex 1, which jumps reversibly at approx -100°C upon cooling at 50°C min-1 and heating at 30°C min-1. Single-crystal X-ray diffraction measurements and differential scanning calorimetric analyses of 1 suggest the occurrence of a thermal phase transition at this temperature Detailed structural analyses indicate that anisotropic changes to the mol arrangement occur in 1, whereby the crystallog a axis contracts upon cooling while the b axis expands. Simultaneously, macroscopic changes of the crystal dimensions occur. This is observed as bending, i.e., as an inclination of the crystal edges, and in the form of splitting, which occurs in a perpendicular direction to the major crystal axis. This study thus bridges the gap between macroscopic mech responses that are observed in high-speed photog images and microscopic changes of the crystal structure, which are evaluated by X-ray diffraction measurements with face indexing.
Chemical Science published new progress about Bending. 76-84-6 belongs to class alcohols-buliding-blocks, and the molecular formula is C19H16O, COA of Formula: C19H16O.
Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts