Selective Anion Binding Drives the Formation of Ag^I₈L₆ and Ag^I₁₂L₆ Six-Stranded Helicates.

ABSTRACT: Here we describe the formation of an unexpected and unique family of hollow six-stranded helicates. The formation of these structures depends on the coordinative flexibility of silver and the 2-formyl-1,8-napthyridine subcomponent. Crystal structures show that these assemblies are held together by Ag₄I, Ag₄Br, or Ag₆(SO₄)₂ clusters, where the templating anion plays an integral structure-defining role. Prior to the addition of the anionic template, no six-stranded helicate was observed to form, with the system instead consisting of a dynamic mixture of triple helicate and tetrahedron. Six-stranded helicate formation was highly sensitive to the structure of the ligand, with minor modifications inhibiting its formation. This work provides

SUBMITTER: McTernan CT 

PROVIDER: S-EPMC7879535 | biostudies-literature | 2021 Jan

REPOSITORIES: biostudies-literature