Hydrogen bond energydoi:10.1002/9783527678679.dg05853This article has no abstract.American Cancer SocietyThe Dictionary of Genomics, Transcriptomics and Proteomics
4) hydrogen bond energy 氢键能 5) hydrogen-bonded 氢键键合的 6) hydrogen bonding agent 氢键键合剂 补充资料:氢键 氢键 hydrogen bond 一个与电负性高的原子X共价结合的氢原子(X—H)带有部分正电荷,能再与另一个电负性高的原子(如Y)结合,形成一个聚集体X—H…Y的化学结合作用。X、Y原子的电负性越大、...
The intensive use of fossil energy causes global warming. Hydrogen fuel cell is a technology that transforms the chemical energy stored in hydrogen directly into electricity with high efficiency, and its only emission is water. It acts as one of the practical and promising solutions to realize a ...
A consequence of hydrogen bonding is that hydrogen bonds tend to arrange in a tetrahedron around each water molecule, leading to the well-known crystal structure of snowflakes. In liquid water, the distance between adjacent molecules is larger and the energy of the molecules is high enough that ...
The energy required to break a hydrogen bond between two groups in vacuum is in the range of 25 kJ/mol for a peptide hydrogen bond [5,7]. However, in water, such exposed groups are more prone to create new hydrogen bonds with nearby water molecules, canceling the impact. Thus, the de...
The hydrogen bond requires only 8–40 kJ mol−1 to break, compared to much higher values for covalent bonds such as CC (346 kJ mol−1) or CH (411 kJ mol−1). This low bond energy makes it useful, because it means that the bond can form and break under the influence of ...
A chemical bond in which a hydrogen atom that is already bonded to an atom in a molecule forms a second bond with another atom, either in the same molecule or in a different one. The second atom is usually of a type that strongly attracts electrons, such as nitrogen or oxygen. ...
Hydrogen bonds are not particularly strong, with a bond strength of about 4–40 kJmol-1 (kilojoules per mol). However, in systems that contain a lot of hydrogen bonds, their strengths can add up, and they can give out or take up a substantial amount of energy when they form or break...
bonds. It has only about 1/20 the strength of a covalent bond.1It is also weaker than the ionic bond. Nevertheless, it is somewhat stronger than avan der Waals interaction. Depending on the atoms involved, the geometry, and the environment, the energy may vary from 1 to 40 kcal/mol.2...
The Copperfield gin harnesses the ingenuity of two local businesses to demonstrate creative ways in which clean hydrogen can be used to mitigate greenhouse gas emissions and support the transition to a zero-carbon future." Adam Bond, AFC Energy CEO...