I am quite new to this chat 安培小时. ... 是我有…. 我是相当新的到这闲谈 [translate] ahydrogen bonds between amine molecules build up a linear structure as described between alcohol molecules 氢键在胺物分子之间加强一个线性结构如所描述在酒精分子之间 [translate] ...
(Chemistry) a weak chemical bond between an electronegative atom, such as fluorine, oxygen, or nitrogen, and a hydrogen atom bound to another electronegative atom. Hydrogen bonds are responsible for the properties of water and many biological molecules ...
The intermolecular forces of attraction (IMFA) are the interactions occurring between molecules. These are much weaker than the chemical bonds but are essential in determining the overall property of the compound. For instance, the fact that water has a higher boiling p...
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Tags Bonding Hydrogen Hydrogen bonding Molecules Water In summary, when drawing hydrogen bonds between a water molecule and H3PO4 or acetic acid, the hydrogen bond is formed between the polarized hydrogen atom and either the oxygen or hydrogen atom of the compound. In the case of acetic acid,...
bonds (chemical)water/ hydrogen bondingwaterammonia moleculesSCF LCAO MO methodSlater type orbitalsequilibrium separationminimumpotential energy curveThe hydrogen bond N·H O between the water and ammonia molecules has been investigated ab initio using the SCF LCAO MO method. The minimal and extended ...
However, X-ray analysis of crystalline diketo-piperazine, a substance related to the proteins, shows that the molecules are linked together by hydrogen bonds between their respective oxygen atoms and =NH groups, to form flat continuous chains throughout the structure. ···0 CH"2 - . /H·...
Hydrogen bonds between hydrogen fluoride and aromatic azines: An ab initio study 来自 国家科技图书文献中心 喜欢 0 阅读量: 54 作者:VH Rusu,MN Ramos,JBPD Silva 摘要: MP2/6-31++G( d,p ) ab initio molecular orbital calculations have been employed to characterize hydrogen-bonded complexes between...
Hydrogen Bonds in DNA Molecules DNA strands are held together into a double helical structure by hydrogen bonds between the purine and pyrimidine bases on the two complementary strands. This highly specific base pairing of A-T (two hydrogen bonds) and G-C (three hydrogen bonds) was instrumental...
Hydrogen bonds can exist between atoms in different molecules or in parts of the same molecule. One atom of the pair (the donor), generally fluorine, nitrogen, or oxygen atom, is covalently bonded to a hydrogen atom (FH, NH, or OH), whose electrons it shares unequally; its high electron...