Related Experiment Video
Updated: Mar 21, 2026

Supercritical Nitrogen Processing for the Purification of Reactive Porous Materials
Published on: May 15, 2015
Hydrogenated superalkalis and their possible applications
Ambrish Kumar Srivastava1, Neeraj Misra2
1Department of Physics, University of Lucknow, Lucknow, 226007, Uttar Pradesh, India.
Abstract:
Superalkali species possess lower ionization energy than alkali metals, which allow them to form a variety of unusual compounds with interesting properties. Herein, we report the structures and properties of hydrogenated superalkalis (SAHs) such as FLi2H, OLi3H, and NLi4H using ab initio MP2/6-311++G(d,p) level of theory. All SAH species are found to be thermodynamically stable, which can be considered as a salt between SA cation and H‾ anion. The gas phase basicity and nonlinear optical properties (NLO) of SAH have been explored. The larger proton affinity of NLi4H isomers 1187-1226 kJ mol(-1) and significant mean hyperpolarizability 1.5 × 10(3)-3.7 × 10(3) a.u. suggest their strong basic nature and enhanced NLO properties, respectively. We have also demonstrated some possible applications of hydrogenated superalkalis, as reducing agent as well as building block of supersalts. Graphical abstract The gas phase basicity and nonlinear optical properties of hydogenated superalkalis increase with the increase in the size of superalkalis, FLi2 < OLi3 < NLi4.
More Related Videos
10:01In Situ High Pressure Hydrogen Tribological Testing of Common Polymer Materials Used in the Hydrogen Delivery Infrastructure
Published on: March 31, 2018
06:32A Simple, Low-cost, and Robust System to Measure the Volume of Hydrogen Evolved by Chemical Reactions with Aqueous Solutions
Published on: August 17, 2016
Related Concept Videos
Reduction of Alkenes: Catalytic Hydrogenation
Metals like palladium, platinum, and nickel are commonly used in their solid forms — fine powder on an inert surface. As these catalysts remain insoluble in the reaction mixture, they are referred to as heterogeneous catalysts.
The hydrogenation process takes place on the...
Radical Substitution: Hydrogenolysis of Alkyl Halides with Tributyltin Hydride
The bonds formed in this reaction are stronger than the bonds broken, making it energetically favorable. The reaction follows a radical chain mechanism similar to radical halogenation reactions,...
Reduction of Alkenes: Asymmetric Catalytic Hydrogenation
The metal catalyst used can be either heterogeneous or homogeneous. When hydrogenation of an alkene generates a chiral center, a pair of enantiomeric products is expected to form. However, an enantiomeric excess of one of the products can be facilitated using an enantioselective reaction or an...
Relative Stabilities of Alkenes
Alkali Metals
Table 1: Properties of the alkali metals
Alkyl Halides
Alkyl halides are halogen-substituted alkanes wherein one or more hydrogen atoms of an alkane is replaced by a halogen atom such as fluorine, chlorine, bromine, or iodine. The carbon atom in an alkyl halide is bonded to the halogen atom, which is sp3-hybridized and exhibits a tetrahedral shape.
Unlike alkyl halides, compounds in which a halogen atom is bonded to an sp2 -hybridized carbon atom of a carbon-carbon double bond (C=C) are called vinyl halides. Whereas aryl...