The reaction of gallium metal with (p-MeOC 6 H 4 ) 3 AsI 2 and Et 3 AsI 2 ; isolation of a novel gallium( II ) arsine complex with a gallium–gallium bond and the X-ray crystal structures of GaI 3 [(p-MeOC 6 H 4 ) 3 As] and Ga 2 I 4 (AsEt 3 ) 2

The reaction of (p-MeOC6H4)3AsI2 and Et3AsI2 with gallium metal powder produce the metal complexes Gal3[(p-MeOC6H)4As] and Ga2I4(AsEt3)2, respectively; the latter respresents a unique example of a gallium–tertiary arsine complex containing a gallium–gallium bond, and both structures illustrates the subtle effect of the organic substituent on the arsenic atoms.