Increasing Structural Dimensionality in Ag(I) Coordination Polymers Formed from the Same Flexible Multimodal Thioether Pyrazine Ligand

Three coordination polymers were prepared by the reaction of a new flexible multimodal ligand, bis(2-pyrazylmethyl)sulfide (<b>L</b>), with AgX salts (X = BF<sub>4</sub><sup>-</sup> or PF<sub>6</sub><sup>-</sup>). The polymers showed an increasing dimensionality from 1-D to 2-D to 3-D, and the influence of solvent and anion on the formation and dimensionality of these coordination polymers was explored. A 1-D twisted ladder-like polymer with η-bound benzene and a 2:1 AgPF<sub>6</sub>-to-<b>L</b> ratio, <b>1</b>·MeCN, was formed when benzene was present in the solvent mix. A 2-D undulating sheet with 4.8 topology and a 1:1 AgPF<sub>6</sub>-to-<b>L</b> ratio, <b>2</b>, was formed when CH<sub>2</sub>Cl<sub>2</sub> was present in the solvent mix. A 3-D network, <b>3</b>, with two different 4.8<sup>2</sup> nets linked together by 4.8<sup>5</sup> bridging nodes was formed when a 1:1 AgBF<sub>4</sub>-to-<b>L</b> ratio was used and MeNO<sub>2</sub> was present in the solvent mix. Coordination arrays <b>2</b> and <b>3</b> were found to be related topologically.