Bromine pentafluoride

* Bromine monofluoride ( BrF ) has not been obtained as a pure compound — it dissociates into the trifluoride and free bromine.

* Bromine trifluoride ( BrF < sub > 3 </ sub >) is a yellow-green liquid which conducts electricity — it ionises to form +.

Bromine has two stable isotopes, < sup > 79 </ sup > Br ( 50. 69 %) and < sup > 81 </ sup > Br ( 49. 31 %).

Bromine ( Br ) has two stable isotopes and 30 known unstable isotopes, the most stable of which is < sup > 77 </ sup > Br with a half-life of 57. 036 hours

* Bromine monochloride ( BrCl ) is a red-brown gas with a boiling point of 5 ° C.

Bromine ( or ; from, meaning " stench ( of he-goats )") is a chemical element with the symbol Br, and atomic number of 35.

Bromine is rarer than about three-quarters of elements in the Earth's crust ; however, the high solubility of bromide ion has caused its accumulation in the oceans, and commercially the element is easily extracted from brine pools, mostly in the United States, Israel and China.

Bromine has no essential function in mammals, though it is preferentially used over chloride by one antiparasitic enzyme in the human immune system.

Bromine is slightly soluble in water, but it is highly soluble in organic solvents such as carbon disulfide, carbon tetrachloride, aliphatic alcohols, and acetic acid.

Columbia County, along with Union County, is home to the largest Bromine reserve in the United States.

Bromine is trapped with iron turnings to give a solution of ferric bromide.

Bromine is included as an ozone-depleting chemical because although it is not as abundant as chlorine, it is 45 times more effective per atom in destroying stratospheric ozone.

Bromine is derived from brine, or saltwater, and local companies play an international role in the commercialization of bromine and its many applications.

Bromine was discovered independently by two chemists, Carl Jacob Löwig and Antoine Balard, in 1825 and 1826, respectively.

For an alternative listing of inorganics containing bromine please see inorganic compounds by element # Bromine.

Bromine has no known essential role in human or mammalian health, but inorganic bromine and organobromine compounds do occur naturally, and some may be of use to higher organisms in dealing with parasites.

* Bromine ( Br ), chemical element with atomic number 35

* Reaction of Cyclohexene with Bromine and Potassium Permanganate

Colour code: Carbon, C: black Hydrogen, H: white Bromine, Br: red-brown Oxygen, O: red Structure calculated with Spartan Student 4. 1, using the PM3 semi-empirical method.

In the early 19th century Ignacy Fonberger, a professor at the University of Vilnius, analyzed the chemical composition of Druskininkai's waters and showed that they contain large amounts of Calcium, Sodium, Potassium, Iodine, Bromine, Iron and Magnesium.

Bromine was not produced in large quantities until 1860.

* Theodoregray. com – Bromine

Bromine atoms are even more efficient catalysts, hence brominated CFCs are also regulated.

Similarly, the pentafluoride, DbF < sub > 5 </ sub >, should be even more volatile.

Tantalum pentafluoride ( TaF < sub > 5 </ sub >) is a white solid with a melting point of 97. 0 ° C and tantalum pentachloride ( TaCl < sub > 5 </ sub >) is a white solid with a melting point of 247. 4 ° C.

George A. Olah prepared the so-called magic acid, so-named for its ability to attack hydrocarbons, by mixing antimony pentafluoride ( SbF < sub > 5 </ sub >) and fluorosulfonic acid ( FSO < sub > 3 </ sub > H ).

In this system, HF releases its proton ( H < sup >+</ sup >) concomitant with the binding of F < sup >−</ sup > by the antimony pentafluoride.

For example, in phosphorus pentafluoride ( PF < sub > 5 </ sub >), two resonance structures can be generated: the three equatorial bonds can be formed from sp < sup > 2 </ sup >- hybridized phosphorus orbitals, while the axial bonds can then be described by a 3c-4e bond ; alternatively, the axial bonds can be formed from sp-hybridized phosphorus orbitals, while the equatorial bonds can then be described by a 4c-6e bond ; thus satisfying the octet rule and explaining both the observed trigonal bipyramidal molecular geometry and the fact that the axial bond length ( 158 pm ) is longer than the equatorial ( 153 pm ).

* Chlorine pentafluoride ( ClF < sub > 5 </ sub >) is a colourless gas, made by reacting chlorine trifluoride with fluorine at high temperatures and high pressures.

* Iodine pentafluoride ( IF < sub > 5 </ sub >) is a colourless liquid, made by reacting iodine pentoxide with fluorine, or iodine with silver difluoride.

* Uranium pentafluoride, UF < sub > 5 </ sub >

Magic acid ( FSO < sub > 3 </ sub > H-SbF < sub > 5 </ sub >), is a superacid consisting of a mixture, most commonly in a 1: 1 molar ratio, of fluorosulfonic acid ( HSO < sub > 3 </ sub > F ) and antimony pentafluoride ( SbF < sub > 5 </ sub >).

* Iodine monofluoride ( IF ) is unstable and decomposes at 0 C, disproportionating into elemental iodine and iodine pentafluoride.

It is made by reacting the pentafluoride with fluorine.

* All attempts to form bromine heptafluoride have met with failure ; instead, bromine pentafluoride and fluorine gas are produced.

Unsubstituted PTs are conductive after doping, and have excellent environmental stability compared with some other conducting polymers such as polyacetylene, but are intractable and soluble only in solutions like mixtures of arsenic trifluoride and arsenic pentafluoride.

In particular, reaction of the pentafluoride with HF should form a hexafluorodubnate ion,.

Structure of phosphorus pentafluoride, an example of a molecule with the trigonal bipyramidal coordination geometry.

A second laser frees a fluorine atom, leaving uranium pentafluoride which then precipitates out of the gas.

< div class =" nounderlines "> 2 BrF < sub > 3 </ sub > BrF < sub > 2 </ sub >< sup >+</ sup > + BrF < sub > 4 </ sub >< sup >−</ sup ></ div >