Synthetic quartz crystal — A review

High-pressure recrystallisation—a route to new polymorphs and solvates

“…We have overcome this problem by growing single crystals or polycrystalline material from solution at high pressure. Of course, this is not a new concept and it has been widely applied in hydrothermal growth of inorganic materials such as quartz and other minerals, 11 but as far as we are aware the technique has not been applied to the growth of single crystals of organic compounds contained in diamond-anvil cells. In this paper we illustrate how the technique has been used to prepare polymorphs and solvates of phenanthrene and paracetamol (acetaminophen).…”

Un siècle de Hautes Pressions : Développements technologiques et scientifiques

“…C'est notamment le cas du quartz-a caractérisé par des propriétés piézoélectriques utilisées dans de nombreux dispositifs nécessitant une fréquence constante (télécommunications, mesure du temps.) [31].…”

High-pressure recrystallisation—a route to new polymorphs and solvates of acetamide and parabanic acid

“…We have overcome this problem by growing single crystals or polycrystalline material from solution at high pressure, and recently reported the preparation and characterisation of a 1:1 methanol solvate of paracetamol by recrystallisation from methanol at a pressure of 0.62 GPa using the high-pressure recrystallisation technique [5]. Of course, this is not a new concept and it has been widely applied in hydrothermal growth of inorganic materials such as quartz and other minerals [6], but as far as we are aware the technique has not been applied to the growth of single crystals of organic compounds contained in diamond-anvil cells. In this paper we illustrate how the technique has been used to prepare polymorphs and solvates of acetamide and parabanic acid.…”