Functions Containing Two Halogens and Two Other Heteroatom Substituents

摘要: In general, compounds consisting of a central atom connected to two halogens and other heteroatoms that can be nitrogen, chalcogens, group V elements, metalloids, main metals, transition any combination these, are extremely rare. Compounds with oxygen atoms such as bis(fluoroxy)difluoromethane, difluorodioxirane, 2,2-difluoro-1,3-dioxolanes well documented. A few cyclic noncyclic dichloro analogs exist. Most sulfur also difluoromethanes. There quite dichloro, dibromo, diiodomethylbis(alkyl or arylsulfonyl) derivatives. Dihalogenomethanes nitrogen relatively few, e.g., difluoro- dichloro-oxaziridines. Difluoromethanes bearing benzenethio trimethylsilyl benzenesulfonyl were not studied thoroughly. Dihalogenobis(diamines) exist in all forms (both linear cyclic, dihalogenodinitromethanes) known. Cyclic gem-diamines come the form 1,3-imidazolidines, 1,3-diazolines, 1,3,5-triazolinanes. Bis(phosphonates) have been extensively, both Several examples halogens, metalloid function The silicon functions comprise carbosilanes. For example, difluoro-, dichloro-, dibromomethylbis(trimethylsilanes) together five-membered ring 1,3-disilacyclopentanes'and six-membered 1,3,5-trisilacyclohexanes complexes where difluoromethyl bridge is iron functions.