Crystal Growth of K<sub>2</sub>HCO<sub>3</sub>F·H<sub>2</sub>O with a Very Short Cutoff Edge and Large Birefringence
Yang Li, Kang Min Ok
Abstract
Huge crystals of K2HCO3F·H2O promising for deep-ultraviolet birefringent materials have been grown via a facile aqua-solution method, and the related properties are reported for the first time. K2HCO3F·H2O revealing a parallel arrangement of [HCO3·F·H2O]2– chains along the c-axis exhibits a large experimental birefringence of 0.093 @589.6 nm. With the aid of the coexisting HCO3– and F– groups, the reported material exhibits a very short cutoff edge shorter than 195 nm. Theoretical calculations reveal that the observed large birefringence of the title compound originates from the synergistic effect of the aligned HCO3– and H2O groups.
Topics & Concepts
BirefringenceCutoffCrystal (programming language)CrystallographyEnhanced Data Rates for GSM EvolutionMaterials scienceUltravioletChemistryOpticsPhysicsOptoelectronicsTelecommunicationsProgramming languageQuantum mechanicsComputer scienceInorganic Fluorides and Related CompoundsCrystal Structures and PropertiesSolid-state spectroscopy and crystallography