在复合体中,和贵重气体原子之间的弱到强相互作用
Wiktor Zierkiewicz1, Steve Scheiner2, Mariusz Michalczyk1
1Faculty of Chemistry, Wrocław University of Science and Technology, Wybrzeże Wyspiańskiego 27, 50-370 Wrocław, Poland. wiktor.zierkiewicz@pwr.edu.pl.
Physical chemistry chemical physics : PCCP
|October 3, 2024
概括
阳离子与贵重气体原子形成素键,键强度显著变化. 互动是由弱键的静电学驱动的,较强键的电荷转移由静电学驱动的.
科学领域:
- 无机化学 无机化学 有机化学
- 物理化学 物理化学
- 计算化学计算化学
背景情况:
- 素结合是一种涉及素原子的非共价相互作用.
- 贵族气体传统上被认为是惰性的,但可以形成弱相互作用.
研究的目的:
- 为了研究离子和贵重气体原子之间的素键.
- 量化这些相互作用的强度和性质.
主要方法:
- 使用了量子化学计算.
- 分析了各种离子结构 (X = Cl, Br, I) 和贵重气体原子 (Ar, Kr, Xe).
主要成果:
- 证实了离子和贵气之间的素键.
- 结合强度在 1 到 25 kcal mol-1.1 的范围内.
- 静电在较弱的相互作用中占主导地位,而电荷转移在较强的复合体中变得显著.
结论:
- 酸可以与贵气进行可调的素结合.
- 静电和电荷转移力的相互作用决定了相互作用的强度.
相关概念视频
Covalent Bonds
142.1K
Overview
142.1K
Van der Waals Interactions
58.1K
Atoms and molecules interact with each other through intermolecular forces. These electrostatic forces arise from attractive or repulsive interactions between particles with permanent, partial, or temporary charges. The intermolecular forces between neutral atoms and molecules are ion–dipole, dipole–dipole, and dispersion forces, collectively known as van der Waals forces.
58.1K
Covalent Bonding and Lewis Structures
54.9K
Compared to ionic bonds, which results from the transfer of electrons between metallic and nonmetallic atoms, covalent bonds result from the mutual attraction of atoms for a “shared” pair of electrons.
54.9K
Chemical Bonds
16.3K
Atoms participate in a chemical bond formation to acquire a completed valence-shell electron configuration similar to that of the noble gas nearest to it in atomic number. Ionic, covalent, and metallic bonds are some of the important types of chemical bonds. Bond energy and bond length determine the strength of a chemical bond.
Types of Chemical Bonds
An ionic bond is formed due to electrostatic attraction between cations and anions. Often, the ions are formed by the transfer of electrons...
16.3K
Polar Covalent Bonds
20.6K
Covalent bonds are formed between two atoms when both have similar tendencies to attract electrons to themselves (i.e., when both atoms have identical or fairly similar ionization energies and electron affinities). Nonmetal atoms frequently form covalent bonds with other nonmetal atoms. For example, the hydrogen molecule, H2, contains a covalent bond between its two hydrogen atoms. When two separate hydrogen atoms with a particular potential energy approach each other, their valence orbitals...
20.6K
Covalent Bonds
9.5K
Overview
When two atoms share electrons to complete their valence shells, they create a covalent bond. An atom's electronegativity—the force with which shared electrons are pulled towards an atom—determines how the electrons are shared. Molecules formed with covalent bonds can be either polar or nonpolar. Atoms with similar electronegativities form nonpolar covalent bonds; the electrons are shared equally. Atoms with different electronegativities share electrons unequally,...
When two atoms share electrons to complete their valence shells, they create a covalent bond. An atom's electronegativity—the force with which shared electrons are pulled towards an atom—determines how the electrons are shared. Molecules formed with covalent bonds can be either polar or nonpolar. Atoms with similar electronegativities form nonpolar covalent bonds; the electrons are shared equally. Atoms with different electronegativities share electrons unequally,...
9.5K


