Related Experiment Video
Updated: Feb 12, 2026

Determination of Inorganic Arsenic in a Wide Range of Food Matrices using Hydride Generation - Atomic Absorption Spectrometry.
Published on: September 1, 2017
Actinium Hydrides AcH10, AcH12, and AcH16 as High-Temperature Conventional Superconductors
Dmitrii V Semenok1,2, Alexander G Kvashnin1,2, Ivan A Kruglov2,3
1Skolkovo Innovation Center , Skolkovo Institute of Science and Technology , 3 Nobel Street , Moscow 143026 , Russian Federation.
Abstract:
The stability of numerous unexpected actinium hydrides was predicted via the evolutionary algorithm USPEX. The electron-phonon interaction was investigated for the hydrogen-richest and most symmetric phases: R3̅ m-AcH10, I4/ mmm-AcH12, and P6̅ m2-AcH16. Predicted structures of actinium hydrides are consistent with all previously studied Ac-H phases and demonstrate phonon-mediated high-temperature superconductivity with TC in the range of 204-251 K for R3̅ m-AcH10 at 200 GPa and 199-241 K for P6̅ m2-AcH16 at 150 GPa, which was estimated by directly solving the Eliashberg equation. Actinium belongs to the series of d1 elements (Sc-Y-La-Ac) that form high- TC superconducting (HTSC) hydrides. Combining this observation with previous predictions of p0-HTSC hydrides (MgH6 and CaH6), we propose that p0 and d1 metals with low-lying empty orbitals tend to form phonon-mediated HTSC metal polyhydrides.
Related Concept Videos
Superconductor
Types Of Superconductors
Esters to Alcohols: Hydride Reductions
Lithium aluminum hydride is a source of hydride ions and functions as a nucleophile. The mechanism proceeds in three steps. Firstly, the nucleophilic hydride ion attacks the carbonyl carbon of the ester to form a tetrahedral intermediate. Subsequently, the carbonyl group re-forms,...
Sign Convention
The normal force acts perpendicular to the beam's cross-section and can...
Enolate Mechanism Conventions
Carboxylic Acids to Primary Alcohols: Hydride Reduction

