Publication

Solvent caging by diatomic molecules in the photodissociation of molecular iodine-diatomic molecule (I2M) clusters

Hubert van den Bergh
1987
Journal Articles

Abstract

The reaction I2M + hn -> I2(B) + M (M = H, N, O, I) was studied following excitation of the I2M cluster above its B state dissocn. limit. Dispersion of the I fluorescence allows for the detn. of the relative populations of a no. of the vibrational levels v' of the B state. The relative importance of the hindered dissocn. pathway appears to increase with decreasing photon energy as compared to the alternative (unobserved) path in which the I-I bond is broken, and the photofragment recoil energy tends to increase with increasing mass of M. An exceptionally large wavelength dependence of the I2(B) yield for the dissocn. of I2O2 was obsd.

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https://infoscience.epfl.ch/entities/publication/f05ea34f-c4d4-49af-a106-732e1f47561f

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Hubert van den Bergh
1987
Journal Articles

Abstract

Official source

https://infoscience.epfl.ch/entities/publication/f05ea34f-c4d4-49af-a106-732e1f47561f

About this result

Related concepts (32)

Diatomic molecule

Diatomic molecules () are molecules composed of only two atoms, of the same or different chemical elements. If a diatomic molecule consists of two atoms of the same element, such as hydrogen () or oxygen (), then it is said to be homonuclear. Otherwise, if a diatomic molecule consists of two different atoms, such as carbon monoxide () or nitric oxide (), the molecule is said to be heteronuclear. The bond in a homonuclear diatomic molecule is non-polar.

Molecular solid

A molecular solid is a solid consisting of discrete molecules. The cohesive forces that bind the molecules together are van der Waals forces, dipole-dipole interactions, quadrupole interactions, π-π interactions, hydrogen bonding, halogen bonding, London dispersion forces, and in some molecular solids, coulombic interactions. Van der Waals, dipole interactions, quadrupole interactions, π-π interactions, hydrogen bonding, and halogen bonding (2-127 kJ mol−1) are typically much weaker than the forces holding together other solids: metallic (metallic bonding, 400-500 kJ mol−1), ionic (Coulomb’s forces, 700-900 kJ mol−1), and network solids (covalent bonds, 150-900 kJ mol−1).

Molecule

A molecule is a group of two or more atoms held together by attractive forces known as chemical bonds; depending on context, the term may or may not include ions which satisfy this criterion. In quantum physics, organic chemistry, and biochemistry, the distinction from ions is dropped and molecule is often used when referring to polyatomic ions. A molecule may be homonuclear, that is, it consists of atoms of one chemical element, e.g. two atoms in the oxygen molecule (O2); or it may be heteronuclear, a chemical compound composed of more than one element, e.

Related publications (3)

Solvent caging by diatomic molecules in the photodissociation of molecular iodine-diatomic molecule (I2M) clusters

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