[Ga2Cl4(dioxane)2]x: molecular structure and reactivity of a polymeric gallium(II) halide containing two five-coordinate gallium atoms about a Ga–Ga bond

A polymeric 1,4-dioxane adduct of gallium(II) chloride, [Ga2Cl4(dioxane)2]x, containing two five-coordinate gallium atoms about a Ga–Ga bond [Ga–Ga 2.3825(9) Å], reacts with 1,4-dilithiotetraphenylbutadiene affording an unusual Ga(II)–tetraphenylbutadiene complex.