C3H5Br

C3H5Br is the chemical formula for several isomeric compounds. The most common and widely studied isomer is allyl bromide, also known as 3-bromopropene. Allyl bromide is an organobromine compound with the formula CH2=CHCH2Br. It is a colorless liquid with a pungent odor. It is synthesized by the reaction of allyl alcohol with phosphorus tribromide or hydrobromic acid. Allyl bromide is a highly reactive compound and is used as an intermediate in organic synthesis, particularly for the introduction of the allyl group into other molecules. It finds applications in the production of polymers, pharmaceuticals, and agrochemicals. Due to its reactivity and toxicity, it is handled with care in laboratory and industrial settings.

Another isomer with the formula C3H5Br is 1-bromopropene, which exists as cis and trans isomers. 1-bromopropene has the formula CH3CH=CHBr. It is less commonly encountered than allyl bromide and is also used in organic synthesis. Its properties and reactivity differ from those of allyl bromide due to the position of the bromine atom. There are also cyclic isomers such as bromocyclopropane, C3H5Br, where the atoms are arranged in a three-membered ring. The specific properties and uses of each isomer vary depending on its molecular structure.