[{1,3,5‐(CH 3 ) 3 H 3 C 6 } 6 Tl 4 ][GaBr 4 ] 4 — Synthesis and Structure of a Mixed Mono‐ and Bis(arene)thallium Complex

A tetrameric Tl 4 [GaBr 4 ] 4 skeletal framework, whose Tl ⊕ ions are alternately coordinated by one or two mesitylene molecules, is present in the title compound. It is formed from Tl[GaBr 4 ] and mesitylene and is the first complex containing both mono‐ and bis(arene)thallium units to be characterized by X‐ray analysis.