Results 81 to 90 of about 3,569 (198)

Covalent bonding and the nature of band gaps in some half-Heusler compounds

, 2005
Half-Heusler compounds \textit{XYZ}, also called semi-Heusler compounds, crystallize in the MgAgAs structure, in the space group $F\bar43m$. We report a systematic examination of band gaps and the nature (covalent or ionic) of bonding in semiconducting 8-
Brewer L, Claudia Felser, Hem Chandra Kandpal, Jepsen O Andersen O K, Nanda B R K, Ram Seshadri, Stoner E C, Villars P, Zintl E   +8 more
core   +1 more source

Tellurides as Zintl phases?

Journal of Physics: Condensed Matter
Abstract Future problems request the development of materials, which serve as components in technologies addressing these challenges. In this context, tellurides are of great interest since many members of that remarkable family of solids are at the frontline of fundamental research and technological applications.
openaire   +2 more sources

Ag12[Ge9(Hyp)2]6 An Intermetalloid Cluster with Bis‐Silylated Ge9 Units

Angewandte Chemie, Volume 138, Issue 4, 22 January 2026.
The reaction of K2Ge9(Hyp)2 (Hyp = Si(SiMe3)3) with phosphine stabilized silver halides gives the new intermetalloid cluster Ag12[Ge9(Hyp)2]6 exhibiting a novel Ag12 core surrounded by six [Ge9(Hyp)2] units acting as ligands. Within the Ag12 core two different kinds of silver atoms are present underlining the intermetalloid character of the cluster ...
Kevin Woern, Claudio Schrenk, Eric Juratti, Andreas Schnepf   +3 more
wiley   +1 more source

High Power Factor vs. High zT—A Review of Thermoelectric Materials for High-Temperature Application

Entropy, 2019
Energy harvesting with thermoelectric materials has been investigated with increasing attention over recent decades. However, the vast number of various material classes makes it difficult to maintain an overview of the best candidates.
Mario Wolf, Richard Hinterding, Armin Feldhoff   +2 more
doaj   +1 more source

A Coloring Study of the Ga Richest Alkali Gallides: New In- and Hg-Containing Gallides with the RbGa₇- and the K₃Ga₁₃-Type Structure

Crystals, 2020
The Ga-rich gallides of the alkali metals present an interesting, yet still scarcely investigated case of polyanionic cluster compounds with subtle variations in the character of their chemical bonding.
Martha Falk, Marco Wendorff, Caroline Röhr   +2 more
doaj   +1 more source

Lattice dynamics in thermoelectric Zintl phases

, 2011
A brief introduction to the thermoelectric effects, the studied materials, and the experimen- tal methods is given in the first chapter. The introduction is not intended to be exhaustive, but only to summarize important basic information for the reader.
openaire   +3 more sources

BaGaPd, BaGaPt, and SrGaPt: Crystal Structure and Chemical Bonding in Relation to BaGaAu and the Zintl Phase SrSi2

Zeitschrift für anorganische und allgemeine Chemie, Volume 652, Issue 1, January 6, 2026.
Analysis of chemical bonding in BaGaPd, BaGaPt, and SrGaPt—ternary superstructures of the Zintl phase SrSi2‐ using the quantum‐chemical techniques in position space—reveals the key role of the 3D anionic network of covalently‐bonded Ga and transition metals atoms.
Olga Sichevych, Rainer Giedigkeit, Yurii Prots, Lev Akselrud, Ulrich Burkhardt, Ulrich Schwarz, Frank R. Wagner, Yuri Grin   +7 more
wiley   +1 more source

Various arsenic network structures in 112-type Ca1-xLaxFe1-yPdyAs2 revealed by synchrotron x-ray diffraction experiments

, 2017
Two novel 112-type palladium doped iron arsenides were synthesized and identified using comprehensive studies involving synchrotron x-ray diffraction and x-ray absorption near edge structure (XANES) experiments.
Katayama, Naoyuki, Sawa, Hiroshi, Sugawara, Kento, Sugiyama, Yuki, Tamura, Shinya, Yamada, Yuto   +5 more
core   +1 more source

Formation of the Unprecedented [Ge9Ga–GaGe9]4− Cluster Anion through Nido‐[Ge9]4− Cluster Extension with GaCp*

Zeitschrift für anorganische und allgemeine Chemie, Volume 652, Issue 1, January 6, 2026.
Two ligand‐free “GaGe9” 10‐atom closo‐clusters form a dimer, [Ge9Ga‐GaGe9]4−, through a remarkable Ga‐Ga bridge, with Ga atoms in the +2 oxidation state. Alternative isomers, in which the Ga atoms occupy positions other than the bridging sites of the 20‐atom cluster, are less stable.
Christina Fischer, Yulia Kuznetsova, Wilhelm Klein, Thomas F. Fässler   +3 more
wiley   +1 more source

Visible‐Light‐Driven Hydrogen Release from Layered Hydrogen Silicane

Advanced Optical Materials, Volume 14, Issue 4, 27 January 2026.
Hydrogen molecules can be released from layered hydrogen silicane (L‐HSi) under visible light with low light intensity, such as a solar simulator or commercial light‐emitting diodes (LEDs), without any heat input. L‐HSi is expected to be applied for a safe, solid‐state, and lightweight hydrogen carrier with low energy consumption for dehydrogenation ...
Hirona Ito, Mio Nakai, Akira Yamaguchi, Shin‐ichi Ito, Osamu Oki, Takahiro Kondo, Masahiro Miyauchi, Hideyuki Nakano   +7 more
wiley   +1 more source