Shanxian Chemical
SUPPLEMENTS
What Describes A Hydrogen Bond
On the characteristics of hydrogen bonding
The hydrogen bond is a wonderful theory of chemistry. Its unusual bond is a special interaction between molecules.
Looking at its formation, after the hydrogen atom covalently binds to the atom with strong electronegativity (such as fluorine, oxygen, nitrogen), its electron cloud is biased towards the atom with strong electronegativity, causing the hydrogen nucleus to be slightly exposed and positively charged. At this time, the hydrogen nucleus is prone to attract each other with another atom with strong electronegativity and lone pairs of electrons, thus forming a hydrogen bond.
Its properties are unique. The force of hydrogen bonds is weaker than that of covalent bonds, but stronger than van der Waals forces. This property makes the physical properties of substances containing hydrogen bonds unique. Such as water, due to the existence of hydrogen bonds between molecules, its boiling point is higher than that of hydrides of the same family. The density of ice is lower than that of water, and the gap between water molecules is also increased due to the regular arrangement of hydrogen bonds.
Furthermore, hydrogen bonds are of great significance in biological systems. The secondary structure of proteins, the maintenance of alpha-helix and beta-fold, plays an important role in hydrogen bonds. The double helix structure of DNA and the pairing of bases also rely on hydrogen bonds to ensure the accurate transmission of genetic information.
Therefore, hydrogen bonds play a key role in the fields of chemistry and biology, affecting the properties of matter and the process of biology. It is a wonderful existence in the microscopic world.
The hydrogen bond is a wonderful theory of chemistry. Its unusual bond is a special interaction between molecules.
Looking at its formation, after the hydrogen atom covalently binds to the atom with strong electronegativity (such as fluorine, oxygen, nitrogen), its electron cloud is biased towards the atom with strong electronegativity, causing the hydrogen nucleus to be slightly exposed and positively charged. At this time, the hydrogen nucleus is prone to attract each other with another atom with strong electronegativity and lone pairs of electrons, thus forming a hydrogen bond.
Its properties are unique. The force of hydrogen bonds is weaker than that of covalent bonds, but stronger than van der Waals forces. This property makes the physical properties of substances containing hydrogen bonds unique. Such as water, due to the existence of hydrogen bonds between molecules, its boiling point is higher than that of hydrides of the same family. The density of ice is lower than that of water, and the gap between water molecules is also increased due to the regular arrangement of hydrogen bonds.
Furthermore, hydrogen bonds are of great significance in biological systems. The secondary structure of proteins, the maintenance of alpha-helix and beta-fold, plays an important role in hydrogen bonds. The double helix structure of DNA and the pairing of bases also rely on hydrogen bonds to ensure the accurate transmission of genetic information.
Therefore, hydrogen bonds play a key role in the fields of chemistry and biology, affecting the properties of matter and the process of biology. It is a wonderful existence in the microscopic world.
Scan to WhatsApp
