Description:Benzeneselenenyl chloride, with the CAS number 5707-04-0, is an organoselenium compound characterized by the presence of a selenium atom bonded to a benzene ring and a chlorine atom. It typically appears as a yellow to orange liquid and has a pungent odor. This compound is known for its reactivity, particularly in nucleophilic substitution reactions, where the selenium atom can participate in various chemical transformations. Benzeneselenenyl chloride is often used as a reagent in organic synthesis, particularly in the introduction of selenium into organic molecules. Its properties include moderate solubility in organic solvents and a tendency to decompose upon exposure to moisture or air, which can lead to the formation of selenols or other selenium-containing compounds. Due to the presence of selenium, it is important to handle this substance with care, as selenium compounds can be toxic and pose environmental hazards. Proper safety measures, including the use of personal protective equipment, are essential when working with this chemical.
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