Halogen compounds nomenclature

His scheme of nomenclature for nitrogen compounds, and the names thio-, chloro-, etc, did become widespread, especially for sulfur and halogen compounds. 

Halogen Derivatives. Using substitutive nomenclature, names are formed by adding prefixes listed in Table 1.8 to the name of the parent compound. The prefix perhalo- implies the replacement of all hydrogen atoms by the particular halogen atoms. 

Halon is a generic name for halogenated agents used in fire suppression systems. Until recently, two varieties, Halon 1301 and Halon 1211 were the agents of choice as alternatives to water systems where damage to equipment was a problem. Halon 1301 especially was a desirable alternative because of its low toxicity and effectiveness in low concentrations so that it could be used safely in occupied areas. The different numbers in the nomenclature correspond to the number of carbon atoms, fluorine atoms, chlorine atoms, and bromine atoms in that order in the compound If there were a fifth number in the designation, it would refer to the number of iodine atoms. Halon 1301 is the one most commonly used in occupied spaces while Halon 1211 apphcations are typically in storage areas or other areas which are rarely or sporadically occupied. 

An alkenyl halide is a compound with a halogen atom bonded to an alkene carbon. In older nomenclature such compounds were sometimes referred to as vinyl halides. An aryl halide is a compound with a halogen atom bonded to an aromatic ring such as a benzene ring. 

Compounds in which a halogen atom is bonded to an alkene carbon are called alkenyl halides. In older nomenclature these were called vinylic halides. Compounds having a halogen bonded to an aromatic ring are called aryl halides. When the aromatic... 

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