7、氢键Hydrogen Bonding 与负电性大的原子X(氟、氯、氧、氮等)共价结合的氢,如与负电性大的原子Y(与X相同的也可以)接近,在X与Y之间以氢为媒介,生成X-H…Y形的键。这种键称为氢键。氢键的结合能是2—8千卡(Kcal)。因多数氢键的共同作用,所以非常稳定。在a-螺旋的情况下是N-H…O型的氢键,DNA的双螺旋...
Hydrogen Bonding: (HF)2 RevealedNot Availabledoi:10.1038/240257a0NoneSpringer NatureNature
即氢键受体(hydrogen bondingacceptor)上的孤对电子(带部分负电δ−),和另一个强电负性原子N,O,...
7、氢键HydrogenBonding与负电性大的原子X(氟、氯、氧、氮等)共价结合的氢,如与负电性大的原子Y(与X相同的也可以)接近,在X与Y之间以氢为媒介,生成X-H…Y形的键。这种键称为氢键。氢键的结合能是2—8千卡(Kcal)。因多数氢键的共同作用,所以非常稳定。在a-螺旋的情况下是N-H…O型的氢键,DNA的双螺旋情况...
The electronic structure calculations for the hydrogen-bond interactions of tetrahydrofuran (THF), water (H2O), and hydrogen fluoride (HF) have been reported using density functional theory (DFT) method. Three different stable clusters that result from strong intermolecular interactions of the ternary ...
Hydrogen bonding. New York: Oxford University Press, 1997: 3-345 20 Li, A. Y. J. Chem. Phys., 2007, 126: 154102 2 VIP免费下载 下载文档 收藏 分享 赏 0下载提示 1、该文档为VIP文档,如果想要下载,成为VIP会员后,下载免费。 2、成为VIP后,下载本文档将扣除1次下载权益。下载后,不支持...
百度试题 结果1 题目Becauseofhydrogenbonding,hydrogenfluoride(HF)hasahigherboilingpointthanhydrogenchloride(HCl)A.正确B.错误 相关知识点: 试题来源: 解析 正确
The Origin of Hydrogen Bonding. An Energy Decomposition Study The energy decomposition analysis of Morokuma et al. within the ab initio SCF-MO theory has been applied to the study of the origin of hydrogen bonding. An... H Umeyama,K Morokuma - 《Journal of the American Chemical Society》 被...
Hydrogen Bonding Properties of the Complexes of Formaldehyde and its Derivatives with HF and HCldoi:10.1007/s007060200008The complexes of formaldehyde and some of its derivatives with HF and HCl were investigated at HF/6-311 + +G** and MP2/6-311 + +G** levels of theory. ...
F 2/ A3520G Molecular bond strengths, dissociation energies, hydrogen bondingThe changes in total and kinetic energies of the HF molecule have been studied as a function of internuclear separation R. In addition the variation of the electron-electron potential energy with R has been displayed. ...