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

Structural Isomerism02:34

Structural Isomerism

22.3K
Isomerism in Complexes
Isomers are different chemical species that have the same chemical formula. Structural isomerism of coordination compounds can be divided into two subcategories, the linkage isomers and coordination-sphere isomers.
Linkage isomers occur when the coordination compound contains a ligand that can bind to the transition metal center through two different atoms. For example, the CN− ligand can bind through the carbon atom or through the nitrogen atom. Similarly, SCN− can...
22.3K
Stereoisomerism02:52

Stereoisomerism

14.3K
Isomerism in Complexes
Isomers are different chemical species that have the same chemical formula.
Transition metal complexes often exist as geometric isomers, in which the same atoms are connected through the same types of bonds but with differences in their orientation in space. Coordination complexes with two different ligands in the cis and trans positions from a ligand of interest form isomers. For example, the octahedral [Co(NH3)4Cl2]+ ion has two isomers (Figure 1) In the cis...
14.3K
Electron Configuration of Multielectron Atoms03:26

Electron Configuration of Multielectron Atoms

65.9K
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...
65.9K
Valence Bond Theory02:42

Valence Bond Theory

11.5K
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...
11.5K
Crystal Field Theory - Tetrahedral and Square Planar Complexes02:46

Crystal Field Theory - Tetrahedral and Square Planar Complexes

49.3K
Tetrahedral Complexes
Crystal field theory (CFT) is applicable to molecules in geometries other than octahedral. In octahedral complexes, the lobes of the dx2−y2 and dz2 orbitals point directly at the ligands. For tetrahedral complexes, the d orbitals remain in place, but with only four ligands located between the axes. None of the orbitals points directly at the tetrahedral ligands. However, the dx2−y2 and dz2 orbitals (along the Cartesian axes) overlap with the ligands less than the dxy,...
49.3K
Crystal Field Theory - Octahedral Complexes02:58

Crystal Field Theory - Octahedral Complexes

31.4K
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...
31.4K

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

Observing Kinetic Selectivity in Anthracene Photodimerization through Selective Quenching by Excited States of Proximate Rare Earth Cations.

Journal of the American Chemical Society·2026
Same author

Glucagon-like peptide-1 receptor agonists and rotator cuff disease: a scoping review.

BMC musculoskeletal disorders·2026
Same author

Comparison of Bonding in Isostructural Cerium and Thorium Parent Amide Complexes.

Inorganic chemistry·2026
Same author

Probing the Redox Chemistry of Bimetallic Rare Earth-Catecholate Complexes.

Inorganic chemistry·2026
Same author

Superficial vein thrombosis of the upper extremity after pectoralis major repair: An uncommon complication.

Trauma case reports·2026
Same author

Metal-Dependent Photodissociation of Hydrazone Photoswitches from Rare-Earth Complexes.

Journal of the American Chemical Society·2026

関連する実験動画

Updated: Mar 9, 2026

Accessing Valuable Ligand Supports for Transition Metals: A Modified, Intermediate Scale Preparation of 1,2,3,4,5-Pentamethylcyclopentadiene
09:45

Accessing Valuable Ligand Supports for Transition Metals: A Modified, Intermediate Scale Preparation of 1,2,3,4,5-Pentamethylcyclopentadiene

Published on: March 20, 2017

10.9K

セリウム (IV) イミド複合体:構造,計算,反応性研究

Lukman A Solola1, Alexander V Zabula1, Walter L Dorfner1

  • 1P. Roy and Diana T. Vagelos Laboratories, Department of Chemistry, University of Pennsylvania , 231 South 34th Street, Philadelphia, Pennsylvania 19104, United States.

Journal of the American Chemical Society
|January 13, 2017
PubMed
まとめ
この要約は機械生成です。

アルカリ金属カチオンはセリウム (IV) の複合体幾何学に影響を与え,CeN結合を短縮し,カチオンの大きさを増加させる. 新しいサポートされていないCeN結合が達成され,DFTは結合への5d軌道貢献を明らかにした.

さらに関連する動画

Imine Metathesis by Silica-Supported Catalysts Using the Methodology of Surface Organometallic Chemistry
09:37

Imine Metathesis by Silica-Supported Catalysts Using the Methodology of Surface Organometallic Chemistry

Published on: October 18, 2019

10.2K
Line Shape Analysis of Dynamic NMR Spectra for Characterizing Coordination Sphere Rearrangements at a Chiral Rhenium Polyhydride Complex
10:52

Line Shape Analysis of Dynamic NMR Spectra for Characterizing Coordination Sphere Rearrangements at a Chiral Rhenium Polyhydride Complex

Published on: July 27, 2022

3.4K

関連する実験動画

Last Updated: Mar 9, 2026

Accessing Valuable Ligand Supports for Transition Metals: A Modified, Intermediate Scale Preparation of 1,2,3,4,5-Pentamethylcyclopentadiene
09:45

Accessing Valuable Ligand Supports for Transition Metals: A Modified, Intermediate Scale Preparation of 1,2,3,4,5-Pentamethylcyclopentadiene

Published on: March 20, 2017

10.9K
Imine Metathesis by Silica-Supported Catalysts Using the Methodology of Surface Organometallic Chemistry
09:37

Imine Metathesis by Silica-Supported Catalysts Using the Methodology of Surface Organometallic Chemistry

Published on: October 18, 2019

10.2K
Line Shape Analysis of Dynamic NMR Spectra for Characterizing Coordination Sphere Rearrangements at a Chiral Rhenium Polyhydride Complex
10:52

Line Shape Analysis of Dynamic NMR Spectra for Characterizing Coordination Sphere Rearrangements at a Chiral Rhenium Polyhydride Complex

Published on: July 27, 2022

3.4K

科学分野:

  • 無機化学
  • 有機金属化学
  • 材料科学

背景:

  • セリウム (IV) イミド複合体は,そのユニークな結合と反応性のために興味があります.
  • これらの複合体に対するアルカリ金属対陽子の影響を理解することは,新しい材料と触媒の設計に不可欠です.

研究 の 目的:

  • 塩基金属で覆われたセリウム (IV) イミド複合体を合成し,特徴づけること.
  • 塩基金属対陽子のセリウム-窒素結合に対する構造的影響を調査する.
  • これらの新しいセリウム複合体の反応性を調べる

主な方法:

  • アルカリ金属で覆われたセリウム (IV) イミド複合体の合成と完全な特徴付け
  • 複雑な幾何学上のカウンターイオンの影響を決定するX線構造調査.
  • 電子構造と結合を明らかにするための密度関数理論 (DFT) の計算.
  • シリコン-酸素結合の分裂とベンゾフェノンとの反応を含む反応性研究.

主要な成果:

  • [M(solv) x][CeN ((3,5- ((CF3) 2C6H3) ((TriNOx)) コンプレックス (M = Li, K, Rb, Cs) の分離と特徴付け
  • アルカリ金属カチオンの大きさの増加とともにCeN結合の縮小が観察された.
  • 最初のサポートされていない,終端 Ce(IV) N 多重結合複合体の分離は,Cs+カウンターイオンと2.2.2クリプトンで,CeN結合の長さは2.077(3) Åである.
  • DFTの研究では,セリウム5d軌道がCeN結合に有意に寄与していることが示された.
  • カリウム複合体によるSi-O結合の割れと,ルビジアム複合体から稀なCe (IV) -オクソ複合体の形成を含む,実証された反応性.

結論:

  • アルカリ金属カウンターイオンはセリウム (IV) イミド複合体の構造と結合の調整に重要な役割を果たします.
  • サポートされていない末端 Ce ((IV) N 結合を形成する能力はセリウム化学の新たな道を開く.
  • これらの複合体は興味深い反応性を示し,触媒と材料科学における潜在的な応用を強調しています.