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関連する概念動画

Electron Configuration of Multielectron Atoms03:26

Electron Configuration of Multielectron Atoms

64.0K
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...
64.0K
Predicting Molecular Geometry02:27

Predicting Molecular Geometry

44.5K
VSEPR Theory for Determination of Electron Pair Geometries
44.5K
Crystal Field Theory - Tetrahedral and Square Planar Complexes02:46

Crystal Field Theory - Tetrahedral and Square Planar Complexes

48.0K
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,...
48.0K
Valence Bond Theory02:42

Valence Bond Theory

11.1K
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...
11.1K
Stereoisomerism02:52

Stereoisomerism

13.8K
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...
13.8K
Complexation Equilibria: The Chelate Effect01:19

Complexation Equilibria: The Chelate Effect

1.2K
In complexation reactions, metal atoms or cations interact with ligands to form donor-acceptor adducts called metal complexes. Ligands that bind through one donor site are monodentate, ligands with two donor sites are bidentate, and those with more than two donor sites are polydentate ligands. For example, ethylene diamine is a bidentate ligand that binds through two nitrogen donor atoms, forming a five-membered ring. EDTA is a polydentate ligand that binds through four oxygen and two nitrogen...
1.2K

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関連する実験動画

Updated: Jan 9, 2026

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

11.1K

セリウム (IV) フォスフィド複合体

Ning Wang1, Xiaoyu Li2, Hui Guo3

  • 1Spin-X Institute, School of Chemistry and Chemical Engineering, State Key Laboratory of Luminescent Materials and Devices, South China University of Technology, Guangzhou 510641, China.

Journal of the American Chemical Society
|December 9, 2025
PubMed
まとめ
この要約は機械生成です。

研究者はセリウム (IV) とリンを含む最初の四価ランタニド・フォスフィド複合体を合成した. これらの複合体は 独特の結合と反応性を表し,有機金属化学を進めている.

さらに関連する動画

Preparation and Use of Carbonyl-decorated Carbenes in the Activation of White Phosphorus
14:07

Preparation and Use of Carbonyl-decorated Carbenes in the Activation of White Phosphorus

Published on: October 3, 2014

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The Synthesis, Characterization and Reactivity of a Series of Ruthenium N-triphosPh Complexes
10:51

The Synthesis, Characterization and Reactivity of a Series of Ruthenium N-triphosPh Complexes

Published on: April 10, 2015

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関連する実験動画

Last Updated: Jan 9, 2026

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

11.1K
Preparation and Use of Carbonyl-decorated Carbenes in the Activation of White Phosphorus
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Preparation and Use of Carbonyl-decorated Carbenes in the Activation of White Phosphorus

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The Synthesis, Characterization and Reactivity of a Series of Ruthenium N-triphosPh Complexes
10:51

The Synthesis, Characterization and Reactivity of a Series of Ruthenium N-triphosPh Complexes

Published on: April 10, 2015

12.6K

科学分野:

  • 有機金属化学
  • ランタニド化学
  • 無機化学

背景:

  • 四価ランタニド複合体の開発は三価同種に遅れをとっている.
  • フォスフィドリガンドは異常な酸化状態の安定化に不可欠である.

研究 の 目的:

  • 最初の四価ランタニド・フォスフィド複合体を合成し,特徴づけること.
  • 電子構造と結合を研究する
  • これらの化合物の初期反応性を調べるため

主な方法:

  • [ImtBuN) 3CeIVP (SiMe3) Ar]複合体の合成
  • 単一結晶のX線微分法による構造の特徴化
  • 結合を分析するための計算研究 (DFT).
  • アジドとダイアゾ化合物の予備反応性研究

主要な成果:

  • 2つの四価セリウム・フォスフィド複合体を合成し構造的に特徴付けました.
  • 異なる幾何学 (ピラミッド形対三角形平面形) とCe-P結合特性を観察した.
  • 計算分析により,Ce-P σとπ結合にf-軌道が有意に寄与していることが明らかになった.
  • 複合体1は,テストされた試薬で,酸化還元過程ではなく,添加反応を示した.

結論:

  • 最初の四価ランタニド・フォスフィド複合体を確立した.
  • Ce-P結合と幾何学に対するリガンド環境の影響を実証した.
  • f-オービタルによる結合の重要性を強調した.
  • レドックス行動と異なる独特の反応パターンを示した.