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Hydrogen Bond Description

"On Hydrogen Bonding"

The principle of all things is subtle and profound. Although the force of hydrogen bonding is not ultimate, it is related to the formation of physical properties and the rules of transformation.

The generation of hydrogen bonds originates from the connection between hydrogen ions and atoms with strong electronegativity, such as fluorine, oxygen, and nitrogen. The outer layer of the hydrogen ion has only one electron. After bonding with the strong electronegative atom, the electron cloud is biased towards it, causing the hydrogen ions to be naked in a positive micro-region. At this time, if you encounter electronegative atoms with lone pairs of electrons in other places, the two are introduced into each other, and hydrogen is bonded.

Its influence on the state of matter is significant. For water, due to the existence of hydrogen bonds, the boiling point is abnormally high. Under normal conditions, most hydrides of the same family are gaseous, and only water is liquid, which is the work of hydrogen bonds. The density of ice is lower than that of water, which is also caused by hydrogen bonds. Water molecules in ice are connected by hydrogen bonds as a regular lattice, and the gap increases, resulting in a decrease in density.

In the field of biochemistry, hydrogen bonds also play a pivotal role. The secondary structure of proteins, α-helix and β-fold, rely on hydrogen bonds to stabilize their shape. In the DNA double helix structure, hydrogen bonds are maintained between base pairs to ensure the accurate transmission of genetic information.

Therefore, the role of hydrogen bonds is a key factor in the production of things. Only by observing microscopic knowledge can we understand the wonders of physical and biochemistry.