Experimental Confirmation of an Iron−Gallium Multiple Bond: Synthesis, Structure, and Bonding of a Ferrogallyne

Abstract

Reaction of disodium tetracarbonylferrate, Na2[Fe(CO)4], with [2,6-bis(2,4,6-triisopropylphenyl)phenyl]gallium dichloride, (Mes*2C6H3)GaCl2 (Mes* = 2,4,6-triisopropylphenyl), affords tetracarbonyliron [2,6-bis(2,4,6-triisopropylphenyl)phenyl]gallyne, (CO)4Fe⋮Ga(C6H3Mes*2), as anaerobically stable yellow prism crystals. The title compound offers evidence in support of an iron−gallium triple bondthe first ferrogallyne.