Search research articles

お問い合わせ

JoVEについて

概要リーダーシップブログ JoVEヘルプセンター

著者向け

出版プロセス編集委員会範囲と方針査読よくある質問投稿

図書館員向け

推薦の声購読アクセスリソース図書館諮問委員会よくある質問

研究

JoVE Journal Methods Collections JoVE Encyclopedia of Experiments アーカイブ

教育

JoVE Core JoVE Business JoVE Science Education JoVE Lab Manual 教員リソースセンター教員サイト

プライバシーポリシー

関連する概念動画

Preparation and Reactions of Sulfides

Preparation and Reactions of Sulfides

Sulfides are the sulfur analog of ethers, just as thiols are the sulfur analog of alcohol. Like ethers, sulfides also consist of two hydrocarbon groups bonded to the central sulfur atom. Depending upon the type of groups present, sulfides can be symmetrical or asymmetrical. Symmetrical sulfides can be prepared via an SN2 reaction between 2 equivalents of an alkyl halide and one equivalent of sodium sulfide.

Structure and Nomenclature of Thiols and Sulfides

Structure and Nomenclature of Thiols and Sulfides

Thiols and sulfides are sulfur analogs of alcohols and ethers, respectively, where the sulfur atom takes the place of the oxygen atom. Thus, thiols are generally represented as RSH, where R is an alkyl substituent and —SH is the functional group. On the other hand, in sulfides, the central sulfur atom is bonded to two hydrocarbon groups on either side. Depending upon the type of group, sulfides can be either symmetrical or asymmetrical. Both thiols and sulfides display a bent geometry,...

Valence Bond Theory

Valence Bond Theory

Coordination compounds and complexes exhibit different colors, geometries, and magnetic behavior, depending on the metal atom/ion and ligands from which they are composed. In an attempt to explain the bonding and structure of coordination complexes, Linus Pauling proposed the valence bond theory, or VBT, using the concepts of hybridization and the overlapping of the atomic orbitals. According to VBT, the central metal atom or ion (Lewis acid) hybridizes to provide empty orbitals of suitable...

Exceptions to the Octet Rule

Exceptions to the Octet Rule

Many covalent molecules have central atoms that do not have eight electrons in their Lewis structures. These molecules fall into three categories:

Hybridization of Atomic Orbitals II

Hybridization of Atomic Orbitals II

sp3d and sp3d 2 Hybridization

VSEPR Theory and the Effect of Lone Pairs

VSEPR Theory and the Effect of Lone Pairs

Effect of Lone Pairs of Electrons on Molecule Geometry

こちらも読む

関連記事

共著者、ジャーナル、引用グラフによってこの研究に関連する記事。

並び替え

Same author

Directionally Locked Heteroepitaxy with a Structurally Modulated van der Waals Material.

ACS nano·2026

Same author

Electronic Layer Decoupling Driven by Density-Wave Order in La_{4}Ni_{3}O_{10}.

Physical review letters·2026

Same author

Symmetry-Broken Ground State and Phonon-Mediated Superconductivity in Kagome CsV_{3}Sb_{5}.

Physical review letters·2026

Same author

Computational Analysis of ELOVL6 Structure and Inhibition for Rational Drug Design.

Journal of chemical information and modeling·2026

Same author

Soft mode origin of charge ordering in superconducting kagome CsV<sub>3</sub>Sb<sub>5</sub>.

Nature communications·2026

Same author

Measuring the Hall Effect in Hysteretic Materials.

Advanced materials (Deerfield Beach, Fla.)·2026

Search research articles

関連する実験動画

Updated: Jan 4, 2026

Author Spotlight: Magnetometric Characterization of Intermediates in the Solid-State Electrochemistry of Redox-Active Metal-Organic Frameworks

Author Spotlight: Magnetometric Characterization of Intermediates in the Solid-State Electrochemistry of Redox-Active Metal-Organic Frameworks

Published on: June 9, 2023

新しい三次元亜硫化物 Ir₂In₈S ダイラック半金属特性

Jason F Khoury¹, Alexander J E Rettie^2,3, Mojammel A Khan²

¹Department of Chemistry , Northwestern University , Evanston , Illinois 60208 , United States.

Journal of the American Chemical Society

|November 8, 2019

まとめ

研究者は新しいタイプIIのディラック半金属Ir2In8Sを合成し,空気安定性があり,高い電子移動性と大きな磁気抵抗性を示しています. この発見は,トポロジカルな半金属を研究するための有望な新しい材料を導入します.

さらに関連する動画

Demonstrating the Simplicity and In Situ Temperature Monitoring of the Mechanochemical Synthesis of Metal Chalcogenides Suitable for Thermoelectrics

Demonstrating the Simplicity and In Situ Temperature Monitoring of the Mechanochemical Synthesis of Metal Chalcogenides Suitable for Thermoelectrics

Published on: August 30, 2024

The Synthesis of [Sn10SiSiMe334]2- Using a Metastable SnI Halide Solution Synthesized via a Co-condensation Technique

The Synthesis of [Sn10SiSiMe334]2- Using a Metastable SnI Halide Solution Synthesized via a Co-condensation Technique

Published on: November 28, 2016

関連する実験動画

Last Updated: Jan 4, 2026

Author Spotlight: Magnetometric Characterization of Intermediates in the Solid-State Electrochemistry of Redox-Active Metal-Organic Frameworks

Author Spotlight: Magnetometric Characterization of Intermediates in the Solid-State Electrochemistry of Redox-Active Metal-Organic Frameworks

Published on: June 9, 2023

Demonstrating the Simplicity and In Situ Temperature Monitoring of the Mechanochemical Synthesis of Metal Chalcogenides Suitable for Thermoelectrics

Demonstrating the Simplicity and In Situ Temperature Monitoring of the Mechanochemical Synthesis of Metal Chalcogenides Suitable for Thermoelectrics

Published on: August 30, 2024

The Synthesis of [Sn10SiSiMe334]2- Using a Metastable SnI Halide Solution Synthesized via a Co-condensation Technique

The Synthesis of [Sn10SiSiMe334]2- Using a Metastable SnI Halide Solution Synthesized via a Co-condensation Technique

Published on: November 28, 2016

科学分野:

凝縮物質物理学
材料科学
固体物理学

背景:

ディラックとウェイル半金属は特殊な輸送特性を持つユニークな準粒子を持っています.
多数のトポロジカルセミメタルが予測されているが,合成の課題や相不安定によって実験的検証が妨げられている.

研究の目的:

新しいタイプIIのディラク半金属,Ir2In8Sを合成し,特徴づけること.
トポロジカル・マテリアル・リサーチにおける潜在的な応用のために,その構造的,電子的,輸送的性質を調査する.

主な方法:

Ir2In8Sの結晶の成長について
ディラック交差点を特定するための電子構造計算.
磁気抵抗とシュブニコフ・デ・ハース振動を含む輸送測定

主要な成果:

新しい構造型の空気安定型ディラク半金属 Ir2In8Sを成功裏に合成した.
ダイラックの2つの交差点を Γ-Z方向に沿って観測した.
測定された高い電子媒介の可動性 (~10,000 cm^2/(V s)) と大きな不飽和の横断磁気抵抗 (~6000%).
シュブニコフ・デ・ハースの振動は小さなフェルミポケットと微妙でないベリー相を示した.

結論:

Ir2In8Sは,トポロジカル半金属を研究するための新しい材料システムです.
その容易な合成とユニークな性質は,トポロジック材料の分野における進歩を提供します.