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

Colors and Magnetism03:02

Colors and Magnetism

12.3K
Color in Coordination Complexes
When atoms or molecules absorb light at the proper frequency, their electrons are excited to higher-energy orbitals. For many main group atoms and molecules, the absorbed photons are in the ultraviolet range of the electromagnetic spectrum, which cannot be detected by the human eye. For coordination compounds, the energy difference between the d orbitals often allows photons in the visible range to be absorbed and emitted, which is seen as colors by the human...
12.3K
Valence Bond Theory02:42

Valence Bond Theory

9.1K
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...
9.1K
Metal-Ligand Bonds02:51

Metal-Ligand Bonds

21.4K
The hemoglobin in the blood, the chlorophyll in green plants, vitamin B-12, and the catalyst used in the manufacture of polyethylene all contain coordination compounds. Ions of the metals, especially the transition metals, are likely to form complexes.
In these complexes, transition metals form coordinate covalent bonds, a kind of Lewis acid-base interaction in which both of the electrons in the bond are contributed by a donor (Lewis base) to an electron acceptor (Lewis acid). The Lewis acid in...
21.4K
Diamagnetism01:26

Diamagnetism

2.5K
Materials consisting of paired electrons have zero net magnetic moments. However, when these materials are placed under an external magnetic field, the moments opposite to the field are induced. Such materials are called diamagnets. Diamagnetism is the response of the diamagnets when placed in an external magnetic field.
Diamagnetism was discovered by Anton Brugmans in 1778 when he observed that bismuth gets repelled by magnetic fields, thus theorizing that diamagnets get repelled by magnets....
2.5K
Crystal Field Theory - Octahedral Complexes02:58

Crystal Field Theory - Octahedral Complexes

27.3K
Crystal Field Theory
To explain the observed behavior of transition metal complexes (such as colors), a model involving electrostatic interactions between the electrons from the ligands and the electrons in the unhybridized d orbitals of the central metal atom has been developed. This electrostatic model is crystal field theory (CFT). It helps to understand, interpret, and predict the colors, magnetic behavior, and some structures of coordination compounds of transition metals.
CFT focuses on...
27.3K
Diamagnetic Shielding of Nuclei: Local Diamagnetic Current01:14

Diamagnetic Shielding of Nuclei: Local Diamagnetic Current

946
An applied magnetic field causes the electrons present in the molecule to circulate, setting up a local diamagnetic current within the molecule. The local diamagnetic current arising from circulating sigma-bonding electrons induces a magnetic field, Blocal that opposes the applied magnetic field, B0. The effective magnetic field experienced by these nuclei is given by the difference between the applied and local magnetic fields in a phenomenon called local diamagnetic shielding. Essentially,...
946

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

Transient bis(carboranyl)boryl anions.

Chemical science·2026
Same author

Synthesis and Reactivity of Boron Triflate and Bistriflimide Complexes Bearing Two <i>ortho</i>-Carboranes.

Inorganic chemistry·2026
Same author

Stepwise C-H bond activations and assembly of binuclear Ln<sup>3+</sup> species coordinated by a hexaanionic <i>anti</i>-η<sup>5</sup>:η<sup>5</sup>-dibenzopentalene-bridged bis(carbazolyl) framework.

Dalton transactions (Cambridge, England : 2003)·2026
Same author

Tuning single-molecule magnetism in Dy<sup>3+</sup> complexes <i>via</i> a tris(aryl)alkoxide ligand.

Dalton transactions (Cambridge, England : 2003)·2026
Same author

Synthesis, characterization, and imidogen photochemistry of a hydrazoic acid adduct of Rh<sub>2</sub>.

Chemical science·2026
Same author

Adding <sup>161</sup>Dy-Mössbauer spectroscopy to a multitechnique investigation of magnetic transitions in a {Co<sup>III</sup><sub>3</sub>Dy<sup>III</sup><sub>3</sub>} Single-Molecule Toroic.

Nature communications·2026

関連する実験動画

Updated: Aug 27, 2025

Synthesis of Cationized Magnetoferritin for Ultra-fast Magnetization of Cells
10:23

Synthesis of Cationized Magnetoferritin for Ultra-fast Magnetization of Cells

Published on: December 13, 2016

10.0K

ダイアニオンアミノボロリドリガンドを用いた高性能単分子磁石

James C Vanjak1, Branford O Wilkins1, Veacheslav Vieru2

  • 1Department of Chemistry, Texas A&M University, 3255 TAMU, College Station, Texas 77843, United States.

Journal of the American Chemical Society
|September 26, 2022
PubMed
まとめ

研究者らは,高性能単分子磁石 (SMM) の新型ホモレプス性fブロックボロリドサンドイッチ複合体を開発した. この複合体は,66 Kの高い遮断温度を含む優れた磁気特性を持ち,利用可能な最高のSMMの1つに位置づけられています.

さらに関連する動画

Fabrication Procedures and Birefringence Measurements for Designing Magnetically Responsive Lanthanide Ion Chelating Phospholipid Assemblies
09:38

Fabrication Procedures and Birefringence Measurements for Designing Magnetically Responsive Lanthanide Ion Chelating Phospholipid Assemblies

Published on: January 3, 2018

7.3K
Multiplexed Single-molecule Force Proteolysis Measurements Using Magnetic Tweezers
10:08

Multiplexed Single-molecule Force Proteolysis Measurements Using Magnetic Tweezers

Published on: July 25, 2012

11.7K

関連する実験動画

Last Updated: Aug 27, 2025

Synthesis of Cationized Magnetoferritin for Ultra-fast Magnetization of Cells
10:23

Synthesis of Cationized Magnetoferritin for Ultra-fast Magnetization of Cells

Published on: December 13, 2016

10.0K
Fabrication Procedures and Birefringence Measurements for Designing Magnetically Responsive Lanthanide Ion Chelating Phospholipid Assemblies
09:38

Fabrication Procedures and Birefringence Measurements for Designing Magnetically Responsive Lanthanide Ion Chelating Phospholipid Assemblies

Published on: January 3, 2018

7.3K
Multiplexed Single-molecule Force Proteolysis Measurements Using Magnetic Tweezers
10:08

Multiplexed Single-molecule Force Proteolysis Measurements Using Magnetic Tweezers

Published on: July 25, 2012

11.7K

科学分野:

  • 協調化学
  • 材料科学
  • マグネティズム

背景:

  • 単分子磁石 (SMM) は,高度な磁気データストレージと量子コンピューティングに不可欠です.
  • 高磁性アニソトロピーを持つfブロック複合体の開発は,依然として重要な課題である.
  • ボロリドリガンドは新しいSMMを設計するための有望な道を提供します.

研究 の 目的:

  • 最初のホモレプティック f-ブロックボロリドサンドイッチ複合体を合成し,特徴づけること.
  • 単一分子磁石として合成された複合体の磁気特性を評価する.
  • 磁気アニソトロピーの強化におけるダイアニオンボロリドリガンドの可能性を調査する.

主な方法:

  • ビス・ボロリド複合体の合成 (1-ピペリディノ) -2,3,4,5-テトラフェニルボロリル2Dy) (1).
  • 金属-リガンド結合距離と線形性を決定するために,X線結晶学を用いた構造的特徴化.
  • マグネチゼーションの逆転障壁 (Ueff) とブロック温度 (TB) を含む磁性特性測定.

主要な成果:

  • 複合体[K(2.2.2) ][[1-(piperidino) -2,3,4,5-tetraphenylborolyl]2Dy] (1) が成功して合成され,最初のホモレプティック f-ブロックボロリドサンドイッチ複合体となった.
  • 複合体1は,Dy3+イオン周りの短メタル-リガンド結合と高線形性を持つアニオン性Ln3+メタルロケンを表している.
  • 66 Kの高い遮断温度 (TB) と,有意な磁気反転障壁 (Ueff = 1600 cm-1) を達成し,最高性能のSMMとして分類しました.

結論:

  • ダイアニオンボロリドリガンドは,f-ブロック複合体におけるリガンドフィールドの軸性を効果的に増加させることができる.
  • このアプローチは磁性アニソトロピーを最大化し,高性能のSMMにつながります.
  • 複合体1は,SMM技術の進歩のためのボロリドリガンドの重要な可能性を示しています.