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Nitrogen tribromide is a chemical compound with the formula NBr 3. It is extremely explosive in its pure form, even at −100 °C, and was not isolated until 1975. [ 2 ] It is a deep-red and volatile solid.
The attractive force draws molecules closer together and gives a real gas a tendency to occupy a smaller volume than an ideal gas. Which interaction is more important depends on temperature and pressure (see compressibility factor). In a gas, the distances between molecules are generally large, so intermolecular forces have only a small effect.
Tribromide is the anion with the chemical formula Br 3 −, or salts containing it: . Tetrabutylammonium tribromide; Tetrabromophosphonium tribromide; Pyridinium perbromide; Sodium and potassium tribromides can be prepared by reacting NaBr or KBr with aqueous bromine.
Therefore, the Mie potential is a more flexible intermolecular potential than the simpler Lennard-Jones potential. The Mie potential is used today in many force fields in molecular modeling . Typically, the attractive exponent is chosen to be m = 6 {\textstyle m=6} , whereas the repulsive exponent is used as an adjustable parameter during the ...
In chemistry, sigma hole interactions (or σ-hole interactions) are a family of intermolecular forces that can occur between several classes of molecules and arise from an energetically stabilizing interaction between a positively-charged site, termed a sigma hole, and a negatively-charged site, typically a lone pair, on different atoms that are not covalently bonded to each other. [1]
It is far less reactive than the other nitrogen trihalides nitrogen trichloride, nitrogen tribromide, and nitrogen triiodide, all of which are explosive. Alone among the nitrogen trihalides it has a negative enthalpy of formation. It is prepared in modern times both by direct reaction of ammonia and fluorine and by a variation of Ruff's method. [6]
[19] [20] [21] All atoms and molecules can partake in van der Waals and London dispersion forces . It is the lack or presence of other intermolecular interactions based on the atom or molecule that affords materials unique properties. [19]
(Nonetheless, nitrogen tribromide is named as a bromide as it is analogous to the other nitrogen trihalides.) [4] Bromination of metals with Br 2 tends to yield lower oxidation states than chlorination with Cl 2 when a variety of oxidation states is available. Bromides can be made by reaction of an element or its oxide, hydroxide, or carbonate ...