A supramolecular motif in the solid-state structure of a difunctional thallium(i) amide defined by weak Tl···Tl attractions

Abstract

The crystal structure of the difunctional thallium(I) amide CH ₂ [CH ₂ N(Tl)SiMe ₃ ] ₂ 1 reveals a pattern of aggregation based on weak attractive metal–metal interactions, a situation which appears to be influenced by the degree of exposure of the thallium centres; this is evidenced by the solid-state structure of the more shielded analogue CH ₂ [CH ₂ N(Tl)SiBu ^t Me ₂ ] ₂ 2 which features no significant Tl···Tl contacts.