Jove
Visualize
お問い合わせ
JoVE
x logofacebook logolinkedin logoyoutube logo
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 JournalMethods CollectionsJoVE Encyclopedia of Experimentsアーカイブ
教育
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab Manual教員リソースセンター教員サイト
利用規約
プライバシーポリシー
ポリシー

関連する概念動画

Hybridization of Atomic Orbitals I03:24

Hybridization of Atomic Orbitals I

64.6K
The mathematical expression known as the wave function, ψ, contains information about each orbital and the wavelike properties of electrons in an isolated atom. When atoms are bound together in a molecule, the wave functions combine to produce new mathematical descriptions that have different shapes. This process of combining the wave functions for atomic orbitals is called hybridization and is mathematically accomplished by the linear combination of atomic orbitals. The new orbitals that...
64.6K
Radicals: Electronic Structure and Geometry01:07

Radicals: Electronic Structure and Geometry

4.9K
This lesson delves into the geometry of a radical, which is influenced by the electronic structure of the molecule. The principle is similar to that of a lone pair, where the unpaired electron influences the geometry at the radical center.
Accordingly, the structure of a trivalent radical lies between the geometries of carbocations and carbanions. An sp2-hybridized carbocation is trigonal planar, while an sp3-hybridized carbanion is trigonal pyramidal. Here, the difference in geometry is...
4.9K
Radical Reactivity: Steric Effects01:10

Radical Reactivity: Steric Effects

2.3K
The presence of electron-donating, electron-withdrawing, or conjugating groups adjacent to a radical center, imparts electronic stabilization to the radicals. Examples of such electronically-stabilized radicals are triphenylmethyl, tetramethylpiperidine‐N‐oxide, and 2,2‐diphenyl‐1‐picrylhydrazyl. These radicals are remarkably stable and are known as persistent radicals. Some of the persistent radicals can even be isolated and purified.
Along with electronic...
2.3K
Metallic Solids02:37

Metallic Solids

20.3K
Metallic solids such as crystals of copper, aluminum, and iron are formed by metal atoms. The structure of metallic crystals is often described as a uniform distribution of atomic nuclei within a “sea” of delocalized electrons. The atoms within such a metallic solid are held together by a unique force known as metallic bonding that gives rise to many useful and varied bulk properties.
All metallic solids exhibit high thermal and electrical conductivity, metallic luster, and malleability....
20.3K
Lattice Centering and Coordination Number02:33

Lattice Centering and Coordination Number

11.2K
The structure of a crystalline solid, whether a metal or not, is best described by considering its simplest repeating unit, which is referred to as its unit cell. The unit cell consists of lattice points that represent the locations of atoms or ions. The entire structure then consists of this unit cell repeating in three dimensions. The three different types of unit cells present in the cubic lattice are illustrated in Figure 1.
Types of Unit Cells
Imagine taking a large number of identical...
11.2K
Electron Configuration of Multielectron Atoms03:26

Electron Configuration of Multielectron Atoms

63.8K
The alkali metal sodium (atomic number 11) has one more electron than the neon atom. This electron must go into the lowest-energy subshell available, the 3s orbital, giving a 1s22s22p63s1 configuration. The electrons occupying the outermost shell orbital(s) (highest value of n) are called valence electrons, and those occupying the inner shell orbitals are called core electrons. Since the core electron shells correspond to noble gas electron configurations, we can abbreviate electron...
63.8K

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

In Honor of Prof. Peter R. Schreiner.

Journal of computational chemistry·2026
Same author

What is so special about benzene? A comparison of selected carbon and silicon isomers E<sub>6</sub>H<sub>6</sub> (E = C, Si).

Physical chemistry chemical physics : PCCP·2026
Same author

Quadruple Bonding of Alkaline Earth Atoms in AeCLi<sub>4</sub> (Ae = Be - Ba) Complexes.

Journal of computational chemistry·2026
Same author

Molecular Boron-Phosphides: From Stable Monomers to Aromaticity-Tunable Smallest Neutral Metallacycles.

Inorganic chemistry·2026
Same author

A Cerium Yldiide Complex with a Ce<math><mstyle><mtable><mtr><mtd><mo>←</mo></mtd></mtr><mtr><mtd><mo>←</mo></mtd></mtr></mtable></mstyle></math>C Double Dative Bond.

Inorganic chemistry·2026
Same author

Homoleptic and Heteroleptic Borylones L1-B(Ph)-L2.

Angewandte Chemie (International ed. in English)·2026

関連する実験動画

Updated: Dec 27, 2025

From Molecules to Materials: Engineering New Ionic Liquid Crystals Through Halogen Bonding
06:44

From Molecules to Materials: Engineering New Ionic Liquid Crystals Through Halogen Bonding

Published on: March 24, 2018

69.5K

安定した結晶ベリリウムラジカルカチオン

Guocang Wang1, Jacob E Walley1, Diane A Dickie1

  • 1Department of Chemistry, University of Virginia, 409 McCormick Road, P.O. Box 400319, Charlottesville, Virginia 22904, United States.

Journal of the American Chemical Society
|February 25, 2020
PubMed
まとめ

研究者らは,ゼロバレントベリリウム複合体を酸化することによって,最初のパラマグネティックベリリウムラジカルカチオン[...]CAAC2Be+•を合成した. この発見は,最初のsブロックで充電された根源と結晶ベリリウム根源を表しています.

さらに関連する動画

Spark Plasma Sintering Apparatus Used for the Formation of Strontium Titanate Bicrystals
11:17

Spark Plasma Sintering Apparatus Used for the Formation of Strontium Titanate Bicrystals

Published on: February 9, 2017

10.2K
Combining Solid-state and Solution-based Techniques: Synthesis and Reactivity of ChalcogenidoplumbatesII or IV
10:42

Combining Solid-state and Solution-based Techniques: Synthesis and Reactivity of ChalcogenidoplumbatesII or IV

Published on: December 29, 2016

11.0K

関連する実験動画

Last Updated: Dec 27, 2025

From Molecules to Materials: Engineering New Ionic Liquid Crystals Through Halogen Bonding
06:44

From Molecules to Materials: Engineering New Ionic Liquid Crystals Through Halogen Bonding

Published on: March 24, 2018

69.5K
Spark Plasma Sintering Apparatus Used for the Formation of Strontium Titanate Bicrystals
11:17

Spark Plasma Sintering Apparatus Used for the Formation of Strontium Titanate Bicrystals

Published on: February 9, 2017

10.2K
Combining Solid-state and Solution-based Techniques: Synthesis and Reactivity of ChalcogenidoplumbatesII or IV
10:42

Combining Solid-state and Solution-based Techniques: Synthesis and Reactivity of ChalcogenidoplumbatesII or IV

Published on: December 29, 2016

11.0K

科学分野:

  • 無機化学
  • 有機金属化学
  • 材料科学

背景:

  • アルカリ土元素は通常,二磁性+2酸化状態の化合物を形成する.
  • ベリリウム化学は,その小さなサイズと高い電荷密度によって制限されており,しばしば複雑な形成またはポリメリゼーションにつながります.

研究 の 目的:

  • 新しいパラマグネティックベリリウム種を合成し,特徴づけること.
  • ベリリウムの化学的行動に関する 既存の理解に挑戦するためです
  • 最初のSブロックの 充電基と 結晶ベリリウム基を報告する

主な方法:

  • 2,2,6,6-テトラメチルピペリジン-1-オキシル (TEMPO) を使用したゼロバレントベリリウム複合体の酸化.
  • 電子パラマグネティック共振 (EPR) 光譜,元素分析,X線結晶学を含む特徴化技術.
  • 密度関数理論 (DFT) の計算により,実験結果が得られた.

主要な成果:

  • パラマグネティックベリリウムラジカルカチオンの合成と分離が成功し, [(CAAC) 2Be>+•
  • EPR,元素分析,X線結晶学により,根源の性質と構造の実験的確認.
  • DFTの計算は,根幹の電子構造と安定性についての洞察を提供した.

結論:

  • [[[CAAC]]2Be>+•の分離は,ベリリウム化学における重要な進歩を表している.
  • この研究は,sブロックの元素に異常な酸化状態と過激な種へのアクセスの可能性を示しています.
  • この発見は,ベリリウム基のラジカルの反応性と応用に関する新しい研究への道を開きます.