It's a type of inter-molecular force. They're called London Dispersion Forces (one of a group of different intermolecular forces known generically as Van der Waals Forces). These forces are weak and short-lived, and created by the interaction of instantaneous dipoles The larger the molecule, the stronger the London Forces because there are more electrons to create an attraction.
They vary depending on the molecules under consideration. They are all electrostatic in nature deriving from the interaction of permanent or instantaneous dipoles. They are lumped together as Van der Waals forces but can be considered to be of 3 types:-Keesom forces permanent dipole dipole interactionsDebye forces; permanent dipole interaction with induced dipole,London dispersion forces ; interaction between two instantaneous dipoles.
The attractive force among molecules in liquid bromine is primarily due to London dispersion forces, which are weak intermolecular forces that result from temporary fluctuations in electron distribution within molecules. These forces are responsible for holding the molecules together in the liquid phase.
Intermolecular because intermolecular forces occur between molecules, not within the same molecule. Specifically the forces are London dispersion forces, due to the interaction of instantaneous dipoles.
PH3 has a dipole moment , of 0.58 D. Therefore there will be dipole dipole interactions. All molecules experience London dispersion forces as these are caused by the interaction of instantaneous dipoles due to the movement of electrons within the molecules.
I would expect a Van der Waals interaction between the R group in the tertiary structure of the protein and the CH2CH2CH2CH2NH3 group. This interaction occurs due to the transient dipoles created by the movement of electrons in the molecules. It helps stabilize the structure of the protein by providing additional attractive forces between the two groups.
The attractive forces between chains are due to instantaneous induced dipoles, London dispersion forces,( not induced diipoles due to permananent dipoles). Polyethylene chains are long and the number of electrons is large- the intermolecular attraction will be significant.
the instantaneous dipole
They vary depending on the molecules under consideration. They are all electrostatic in nature deriving from the interaction of permanent or instantaneous dipoles. They are lumped together as Van der Waals forces but can be considered to be of 3 types:-Keesom forces permanent dipole dipole interactionsDebye forces; permanent dipole interaction with induced dipole,London dispersion forces ; interaction between two instantaneous dipoles.
London dispersion forces.
The attractive force among molecules in liquid bromine is primarily due to London dispersion forces, which are weak intermolecular forces that result from temporary fluctuations in electron distribution within molecules. These forces are responsible for holding the molecules together in the liquid phase.
Intermolecular because intermolecular forces occur between molecules, not within the same molecule. Specifically the forces are London dispersion forces, due to the interaction of instantaneous dipoles.
Induced dipoles are important in everyday life because they play a role in various phenomena. For example, they are responsible for the attractive forces between molecules in liquids and solids, which determine the physical properties of substances such as boiling point and viscosity. Induced dipoles also contribute to the formation of hydrogen bonds, which are crucial for the structure and function of biological molecules like DNA and proteins. Additionally, they are involved in the interaction between materials in applications such as adhesion and chromatography.
PH3 has a dipole moment , of 0.58 D. Therefore there will be dipole dipole interactions. All molecules experience London dispersion forces as these are caused by the interaction of instantaneous dipoles due to the movement of electrons within the molecules.
I would expect a Van der Waals interaction between the R group in the tertiary structure of the protein and the CH2CH2CH2CH2NH3 group. This interaction occurs due to the transient dipoles created by the movement of electrons in the molecules. It helps stabilize the structure of the protein by providing additional attractive forces between the two groups.
London dispersion forces derive from the interraction of instantaneous induced dipoles - the inetraction of polar molecules (having a permanent dipole )is called a Keesom force- the force between a permanent polar molecule and an induced dipole in another molecule is called a debye force--
The intermolecular force that attracts two nonpolar molecules to each other is called London dispersion forces. These forces arise from temporary fluctuations in electron distribution within molecules, leading to the formation of instantaneous dipoles. These dipoles can induce corresponding dipoles in neighboring molecules, resulting in a weak attraction between them. Although individually weak, these forces can become significant in larger nonpolar molecules or in bulk quantities.
The strongest attractive force in CH4 is the London dispersion force (van der Waals force). This force is due to temporary fluctuations in electron distribution within the molecule, leading to temporary dipoles that attract neighboring molecules.