Nitrosyl chloride and molybdenum hexacarbonyl react to give [Mo(NO)Cl]. Metal complexes containing only nitrosyl ligands are called isoleptic nitrosyls. NOBF reacts with some metal carbonyl complexes to yield related metal nitrosyl complexes. Three iron atoms are bonded to two nitrosyl groups. Nitrosyl chloride is used to prepare metal nitrosyl complexes. In this case, nitrosylsulfuric acid is used in place of nitrosyl chloride. Nitrosyl bromide (NOBr) is red. Nitrosonium hexachloroplatinate is obtained by the reaction of nitrosyl chloride (NOCl) and platinum metal. Allowing corticosterone acetate to react with nitrosyl chloride in dry pyridine yields the nitrite. In this function, NO is referred to as a nitrosyl ligand. Cyclopentadienyl nickel nitrosyl is a highly toxic organonickel chemical. Many kinds of nitrosyl complexes are known, which vary both in structure and coligand. A variety of other oxidants work well also, such as nitrosyl tetrafluoroborate. Nitrosonium tetrafluoroborate, also called nitrosyl tetrafluoroborate, is a chemical compound with the chemical formula NOBF. Sometimes nitrosyl chloride NOCl also is considered as pseudohalogen.