Anion-driven Ag(I) coordination architectures: structural diversity and photoluminescence behaviors

<p>To observe anion impact on structural diversity of coordination architectures, three 1-D Ag(I) complexes with distinct features have been prepared, {[Ag(bpbib)<sub>2</sub>(NO<sub>3</sub>)]·C<sub>3</sub>NH<sub>9</sub>O)}<sub>n</sub> (<b>1</b>), [Ag<sub>2</sub>(bpbib)<sub>2</sub>·(BF<sub>4</sub>)<sub>2</sub>]<sub>n</sub> (<b>2</b>), and [Ag<sub>2</sub>(bpbib)<sub>2</sub>·(ClO<sub>4</sub>)<sub>2</sub>]<sub>n</sub> (<b>3</b>), by the reactions of 4,4′-bis((2-(pyridin-2-yl)-<sup>1</sup>H-benzo[d]imidazol-1-yl)methyl)biphenyl (bpbib) with Ag(I) salts. Complex <b>1</b> is a 1-D helical chain, whereas <b>2</b> and <b>3</b> bear ligand-unsupported Ag(I)···Ag(I) interaction-directed 1-D structural motif, with synergetic working of flexible organic linker and anions. All complexes exhibit strong triplet state emission at cryogenic temperatures, which profits from the reduction of nonradiative transitions.</p>