hydrogen bond

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hydrogen bond

[′hī·drə·jən ′bänd]
(physical chemistry)
A type of bond formed when a hydrogen atom bonded to atom A in one molecule makes an additional bond to atom B either in the same or another molecule; the strongest hydrogen bonds are formed when A and B are highly electronegative atoms, such as fluorine, oxygen, or nitrogen.
References in periodicals archive ?
Individually, each H-bond formed is quite weak, but when a number of them occur in series such as between two complementary strands the effect is additive and the result is a non-covalent but strong net force holding the strands together.
In this article, two kinds of H-bond are mainly analyzed which can transform from each other.
The force extension curve (Figure 7) shows a set of consecutive peaks where each peak is associated with a single H-bond breaking event.
Here the H-bonded site is preferred because the carbonyl carbon has increased positive character due to electrons being withdrawn by the H-bond (Fig.
PABA3/[beta]-CD (B) present only one H-bond between H of N[H.
Here, the distance between every two bases that are connected by an h-bond is > k if and only if the corresponding Motzkin path is in [M.
a nitro or cyano); and b) an aryl-amide linkage to a carbon hosting a strong H-bond donor group at the opposite terminus of the ligand (see, e.
N atom of CN function represented as a H-bond acceptor with the side chain; Arg 70 (71.
The main object of this work is to investigate H-bond formed on the surface of unmodified AT and the corresponding dynamic mechanical and crystalline properties of the nanocornposite.
In poly (DGEBA-co-HAn-azo-HNAB), containing two hydroxyl groups on one chromophore, the trans configuration of the azo unit can be stabilized by a double H-bond array (see Fig.
To the best of our knowledge, this is the strongest neutral H- bond encountered that it is not a resonance assisted H-bond (RAHB).