Shanxian Chemical
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How To Identify A Hydrogen Bond
On the Differentiation of Hydrogen Bonds
If you want to understand the distinction of hydrogen bonds, you should examine them in detail. Hydrogen bonds, an unusual chemical bond, are a special interaction between molecules.
First, the genus of the concept of atoms. To form a hydrogen bond, there must be a hydrogen atom, and the hydrogen atom must be directly connected to an atom with a large electronegativity and a small radius (such as fluorine, oxygen, nitrogen). This is one of the key points for the formation of hydrogen bonds. For example, in water, hydrogen is connected to oxygen, and there is a basis for the formation of hydrogen bonds.
Second, the body of the interaction. In addition to the molecule where hydrogen is connected to a specific atom, another atom with a large electronegativity and a lone pair of electrons needs to interact with it. The interaction between this atom and the hydrogen atom is the hydrogen bond Taking ammonia and water as an example, nitrogen in ammonia has a lone pair of electrons, and hydrogen and oxygen in water are connected. When the two meet, nitrogen can form a hydrogen bond with hydrogen in water.
Furthermore, observe the force and distance of the interaction. The force of hydrogen bonding is weaker than the chemical bond, but stronger than the van der Waals force. Its action distance also has a specific range, and it can form a hydrogen bond without any distance. Generally speaking, the distance between the hydrogen atom and the interacting atom is within a certain range, and an effective hydrogen bond can be formed. If
can understand this number, it is possible to distinguish the hydrogen bond, and to observe the small interaction between substances, and to know the cause of the change in physical properties.
If you want to understand the distinction of hydrogen bonds, you should examine them in detail. Hydrogen bonds, an unusual chemical bond, are a special interaction between molecules.
First, the genus of the concept of atoms. To form a hydrogen bond, there must be a hydrogen atom, and the hydrogen atom must be directly connected to an atom with a large electronegativity and a small radius (such as fluorine, oxygen, nitrogen). This is one of the key points for the formation of hydrogen bonds. For example, in water, hydrogen is connected to oxygen, and there is a basis for the formation of hydrogen bonds.
Second, the body of the interaction. In addition to the molecule where hydrogen is connected to a specific atom, another atom with a large electronegativity and a lone pair of electrons needs to interact with it. The interaction between this atom and the hydrogen atom is the hydrogen bond Taking ammonia and water as an example, nitrogen in ammonia has a lone pair of electrons, and hydrogen and oxygen in water are connected. When the two meet, nitrogen can form a hydrogen bond with hydrogen in water.
Furthermore, observe the force and distance of the interaction. The force of hydrogen bonding is weaker than the chemical bond, but stronger than the van der Waals force. Its action distance also has a specific range, and it can form a hydrogen bond without any distance. Generally speaking, the distance between the hydrogen atom and the interacting atom is within a certain range, and an effective hydrogen bond can be formed. If
can understand this number, it is possible to distinguish the hydrogen bond, and to observe the small interaction between substances, and to know the cause of the change in physical properties.
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