Crystalline and Liquid Structure of Zinc Chloride Trihydrate: A Unique Ionic Liquid
Citations Over TimeTop 17% of 2015 papers
Abstract
The water/ZnCl(2) phase diagram in the vicinity of the 75 mol % water composition is reported, demonstrating the existence of a congruently melting phase. Single crystals of this 3-equiv hydrate were grown, and the crystal structure of [Zn(OH(2))(6)][ZnCl(4)] was determined. Synchrotron X-ray and neutron diffraction and IR and Raman spectroscopy along with reverse Monte Carlo modeling demonstrate that a CsCl-type packing of the molecular ions persists into the liquid state. Consistent with the crystalline and liquid structural data, IR spectroscopy demonstrates that the O-H bonds of coordinated water do not exhibit strong intermolecular hydrogen ion bonding but are significantly weakened because of the water's coordination to Lewis acidic zinc ions. The O-H bond weakening makes this system a very strong hydrogen-bond donor, whereas the ionic packing along with the nonpolar geometry of the molecular ions makes this system a novel nonpolar, hydrogen-bonding, ionic liquid solvent.
Related Papers
- → A reverse Monte Carlo study of molten lithium carbonate(1999)3 cited
- → Structural study of amorphous LaNi5D : In situ neutron and X-ray diffraction experiments in deuterium gas(2008)3 cited
- → Structural Observation of Amorphous Alloys by Neutron Diffraction(2006)
- → Structural Study of Amorphous and Nano-crystalline Materials by Neutron Scattering(2014)
- → Evidence of strong correlation between local structures in glass and crystalline phase of lanthanum tellurite system(2020)