Phosphine imide

In chemistry a phosphine imide (sometimes abbreviated to phosphinimide) also known as a iminophosphorane is a functional group with the formula R₃P=NR. While structurally related to phosphine oxide its chemistry has more in common with phosphonium ylides.

Anions of this group, with the structure R₃P=N⁻, are called phosphinoimidates and are used as ligands to form phosphinimide complexes which are highly active catalysts in some olefin polymerization reactions.

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