Synthesis, structure, and chemistry of ligating dichlorodiazomethane. The crystal and molecular structures of [WBr(dppe)2N2CCl2]+[PF6]– and [WBr(dppe)2{N2C(Cl)C(CN)2}]·CH2Cl2

Abstract

A complex of dichlorodiazomethane, [WBr(dppe)₂N₂CCl₂]⁺[PF₆]^–, which is formed by reaction of [WBr(dppe)₂N₂H₂]⁺Br^– with CXCl₃(X = Br or H) in the presence of a diphenyl iodonium salt and aqueous base, undergoes rapid reaction with nucleophiles to give a range of novel organodinitrogen complexes; the molecular structures of the parent dichlorodiazomethane complex, and its reaction product with dicyanomethanide ion (a vinyl diazenido complex), were determined by single-crystal X-ray analysis.