Publication

Nitrogen oxide-catalyzed recombination of iodine atoms. Elementary steps of the complex mechanism

Hubert van den Bergh
1975
Journal Articles

Abstract

The recombination of I atoms in the presence of NO was studied by laser flash photolysis in the inert gas He, at pressures between 1 and 200 atm and at temps. from 320-440 DegK. The elementary steps of the complex mechanism of the recombination were resolved. The fall-off curve of the interaction I + NO + He -> INO + He was measured as well as the equil. const. for I + NO .tautm. INO. The bond energy of INO is DH00 = 23 +- 3 kcal mole-1.

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Hubert van den Bergh
1975
Journal Articles

Abstract

Official source

Related concepts (32)

Bond energy

In chemistry, bond energy (BE), also called the mean bond enthalpy or average bond enthalpy is a measure of bond strength in a chemical bond. IUPAC defines bond energy as the average value of the gas-phase bond-dissociation energy (usually at a temperature of 298.15 K) for all bonds of the same type within the same chemical species. The bond dissociation energy (enthalpy) is also referred to as bond disruption energy, bond energy, bond strength, or binding energy (abbreviation: BDE, BE, or D).

Chemical bond

A chemical bond is a lasting attraction between atoms or ions that enables the formation of molecules, crystals, and other structures. The bond may result from the electrostatic force between oppositely charged ions as in ionic bonds, or through the sharing of electrons as in covalent bonds. The strength of chemical bonds varies considerably; there are "strong bonds" or "primary bonds" such as covalent, ionic and metallic bonds, and "weak bonds" or "secondary bonds" such as dipole–dipole interactions, the London dispersion force, and hydrogen bonding.

Bond-dissociation energy

The bond-dissociation energy (BDE, D0, or DH°) is one measure of the strength of a chemical bond . It can be defined as the standard enthalpy change when is cleaved by homolysis to give fragments A and B, which are usually radical species. The enthalpy change is temperature-dependent, and the bond-dissociation energy is often defined to be the enthalpy change of the homolysis at 0 K (absolute zero), although the enthalpy change at 298 K (standard conditions) is also a frequently encountered parameter.

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Nitrogen oxide-catalyzed recombination of iodine atoms. Elementary steps of the complex mechanism

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