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Find High Quality Carbon tetrabromide (558-13-4) on LEAPChem.com

Nov. 2019/9/3 14:39:38 By LEAP Chem


Searching for niche products has always been a problem. You have to spend much valuable time looking for a supplier, and then you need to make sure the provider is reputable. Usually, successfully finding a reputable, reliable, and responsible supplier of high quality chemicals must be a headache. Relax now, because those days are over! By coming to the LEAPChem website, you have come one step closer to acquiring your trouble free pharmaceutical chemicals. LEAPChem - Pharmaceutical Chemicals is happy to highlight Carbon tetrabromide, a very promising chemical in the global chemical market.

 

Basic Information of Carbon tetrabromide

Chemical Name: Carbon tetrabromide

Cas No.: 558-13-4

Molecular Formula: CBr4

Chemical Structure:

 558-13-4.png

 

Tetrabromomethane, CBr4, also known as carbon tetrabromide, is a carbon bromide. Both names are acceptable under IUPAC nomenclature.

The high temperature α phase is known as a plastic crystal phase. Roughly speaking, the CBr4 are situated on the corners of the cubic unit cell as well as on the centers of its faces in an fcc arrangement. It was thought in the past that the molecules could rotate more or less freely (a 'rotor phase'), so that on a time average they would look like spheres. Recent work has shown, however, that the molecules are restricted to only 6 possible orientations (Frenkel disorder). Moreover, they cannot take these orientations entirely independently from each other because in some cases the bromine atoms of neighboring molecules would point at each other leading to impossibly short distances. This rules out certain orientational combinations when two neighbor molecules are considered. Even for the remaining combinations displacive changes occur that better accommodate neighbor to neighbor distances. The combination of censored Frenkel disorder and displacive disorder implies a considerable amount of disorder inside the crystal which leads to highly structured sheets of diffuse scattered intensity in X-ray diffraction. In fact, it is the structure in the diffuse intensity that provides the information about the details of the structure.

In combination with triphenylphosphine, CBr4 is used in the Appel reaction, which converts alcohols to alkyl bromides. Similarly, CBr4 is used in combination with triphenylphosphine in the first step of the Corey-Fuchs reaction, which converts aldehydes into terminal alkynes. It is significantly less stable than lighter tetrahalomethane bromination using HBr or Br2. It can be also prepared by more economical reaction of tetrachloromethane with aluminium bromide at 100 °C.

It is used as a solvent for greases, waxes and oils, in plastic and rubber industry for blowing and vulcanization, further for polymerization, as a sedative and as an intermediate in manufacturing agrochemicals. Due to its non-flammability it is used as an ingredient in fire-resistant chemicals. It is also used for separating minerals because of its high density.

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References:

https://en.wikipedia.org/wiki/Tetrabromomethane

https://www.ncbi.nlm.nih.gov/pubmed/6194576

https://www.ncbi.nlm.nih.gov/pubmed/3915301

 

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