Diphenylzinc is an organozinc compound with the chemical formula Zn(C6H5)2, often abbreviated as ZnPh2, where Ph is phenyl. It is in a form of white crystals. It is commonly used as the synthetic equivalent of a Ph− synthon. Solvent-free diphenylzinc exists as dimeric PhZn(μ-Ph)2ZnPh molecules in the solid state, where Ph is phenyl.

Skeletal formula of diphenylzinc dimer
The dimeric solid state form of diphenylzinc.

Diphenylzinc is commercially available. It may be prepared by reaction of phenyllithium with zinc bromide:

2 PhLi + ZnBr2 → Ph2Zn + 2 LiBr

It may also be prepared by the reaction of phenylmagnesium bromide with zinc chloride or diphenylmercury with zinc metal.