易斯酸稳定了甲基和氧的复合物
Jennifer Scott1, Hongjun Fan, Benjamin F Wicker
1Department of Chemistry, Molecular Structure Center, and the School of Informatics, Indiana University, Bloomington, Indiana 47405, USA.
Journal of the American Chemical Society
|October 14, 2008
概括
研究人员合成了一种由易斯酸稳定的新型甲基二烯复合物. 这种复合物与氨基和子发生反应,产生烯酸和独特的oxoscandium化合物.
科学领域:
- 有机金属化学 有机金属化学
- 复杂的扫复合物
- 催化剂是一种催化剂.
背景情况:
- 甲基乙烯联体是有机金属化学中的关键中间体.
- 复合的复合物由于其电子性质而具有独特的反应性.
研究的目的:
- 为了合成和描述一种新型的甲基二烯复合物.
- 为了研究甲基基复合物与各种基质的反应性.
主要方法:
- 通过与三甲基合金反应合成甲基基复合物.
- 结晶学表征和密度函数理论 (DFT) 分析.
- 用氨基和基质进行反应性研究.
主要成果:
- 成功合成并阐明甲基二烯复合物的结构.
- 对布伦斯特德酸反应与氨基的观察.
- 在与二反应时形成一个烯酸和一个新型的氧复合物的定量形成.
结论:
- 甲基基复合物表现出独特的反应模式.
- 易斯酸稳定是复合物的稳定性和反应性的关键.
- 该复合物作为olefins和oxoscandium化合物的前体.
相关概念视频
Resonance and Hybrid Structures
According to the theory of resonance, if two or more Lewis structures with the same arrangement of atoms can be written for a molecule, ion, or radical, the actual distribution of electrons is an average of that shown by the various Lewis structures.
Resonance Structures and Resonance Hybrids
The Lewis structure of a nitrite anion (NO2−) may actually be drawn in two different ways, distinguished by the locations of the N–O and N=O bonds.
Resonance Structures and Resonance Hybrids
The Lewis structure of a nitrite anion (NO2−) may actually be drawn in two different ways, distinguished by the locations of the N–O and N=O bonds.
Lewis Acids and Bases
In 1923, G. N. Lewis proposed a generalized definition of acid-base behavior in which acids and bases are identified by their ability to accept or to donate a pair of electrons and form a coordinate covalent bond.
A coordinate covalent bond (or dative bond) occurs when one of the atoms in the bond provides both bonding electrons. For example, a coordinate covalent bond occurs when a water molecule combines with a hydrogen ion to form a hydronium ion. A coordinate covalent bond also results when...
A coordinate covalent bond (or dative bond) occurs when one of the atoms in the bond provides both bonding electrons. For example, a coordinate covalent bond occurs when a water molecule combines with a hydrogen ion to form a hydronium ion. A coordinate covalent bond also results when...
Lewis Acids and Bases
This lesson delves into Lewis acids and bases in the context of the octet rule for electron-deficient compounds. Here, the concept is discussed, emphasizing the group 13 elements like boron or aluminium. Since group 13 elements possess three valence electrons, they form trivalent compounds with a sextet of electrons and a vacant orbital for the central atom. Consequently, these electron-deficient compounds accept electrons from other species to complete their octet in a chemical reaction. They...
Lewis Symbols and the Octet Rule
Chemical bonds are complex interactions between two or more atoms or ions, which reduce the potential energy of the molecule. Gilbert N. Lewis developed a model called the Lewis model that simplified the depiction of chemical bond formation and provided straightforward explanations for the chemical bonds seen in most common compounds.
Lewis Structures of Molecular Compounds and Polyatomic Ions
To draw Lewis structures for complicated molecules and molecular ions, it is helpful to follow a step-by-step procedure as outlined:
Resonance
The Lewis structure of a nitrite anion (NO2−) may actually be drawn in two different ways, distinguished by the locations of the N-O and N=O bonds.

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