Define Hydrogen bonds. Hydrogen bonds synonyms, Hydrogen bonds pronunciation, Hydrogen bonds translation, English dictionary definition of Hydrogen bonds. n. A chemical bond in which a hydrogen atom of one molecule is attracted to an electronegative atom
hydrogen bondacceptorwhereas the hydrogen attached to a more electronegative atom serves as the hydrogen bonddonor. The proton acceptor is the electronegative atom that is not covalently bound to the hydrogen. The proton donor is the atom covalently bound to the hydrogen. The proton donor is a...
网络氢键给体 网络释义 1. 氢键给体 ...形成氢键的 H-A的氢原子必须带有一些酸性, 作为氢键给体(hydrogen-bond donor), 酸性氢原子可以与硷性跟能提供电 … tw.knowledge.yahoo.com|基于7个网页
和电负性极强的原子比如氧、氮、氟相连的氢原子可以作为氢键供体,也就是分子中的N-H和O-H。电负性极强的原子比如氧、氮、氟自己是氢键受体。 氢键供体Hydrogen-bond donors被认为比氢键受体hydrogen-bond acceptors给药物设计者带来更多问题。类药物化合物的大部分极性来自于氢键受体,因为它们的数量通常超过了氢键供体...
1 DEFINITION OF THE HYDROGEN BOND E. Arunan,1* G. R. Desiraju,2* R. A. Klein3*, J. Sadlej,4* S. Scheiner,5*..
The bonding between a hydrogen bond donor and an acceptor atom is very selective and can be defined in terms of specific distance and angle between them, as well as directionality. Various theoretical ab initio studies on the hydrogen-bonding pattern have shown the H-bond to be highly ...
Some of the common and popular, and perhaps the most investigated, DESs are the ones comprising an ammonium salt and an appropriate hydrogen bond (HB) donor in a predetermined mole ratio. The formation of the DES is attributed to the H-bonding interaction(s) present between the salt and ...
What is a hydrogen bond donor? What is a covalent bond in chemistry? Are hydrogen bonds covalent? Can hydrogen form a double bond? Is a hydrogen bond stronger than a covalent bond? How is a hydrogen bond different from a covalent bond?
The hydrogen bond is a dipole-dipole bonding interaction between a hydrogen atom, which is covalently bonded to an electronegative atom (donor), and another electronegative atom (acceptor) [117]. The donor and acceptor atoms are normally oxygen, nitrogen or fluorine. The bond energy for a hydrog...
Hydrogen bondsare found in proteincrystallographyindirectly. If a properhydrogen bondacceptor–donor pair is within the correct distance, the bond is taken to be ahydrogen bond. This distance is generally considered to be from 2.7 to 3.3 Å, with 3.0 Å being the most common value for prote...