Acetonitrile-Templated Assembly of a Laminar Silver(I) Phthalate Coordination Polymer

A novel infinite 2D silver(I) phthalate coordination polymer (CP), {CH3CN⊂[Ag2(pta)]4·CH3CN}n, (1, H2pta = phthalic acid) was synthesized and characterized. The flowerpot-shaped cavity in the sheet accommodates a linear acetonitrile molecule through quadruplex Ag···Nacetonitrile interaction. Using H2O as a solvent in the same preparative procedure, another silver(I) phthalate CP 2, {[Ag2(pta)(H2O)]}n, was isolated. Complex 2 is also a 2D sheet but does not include any solvent-occupied cavity. A comparative experiment shows that the acetonitrile acts as a template for the sheet formation. Moreover, the TGA and photoluminescence spectra of 1 and 2 were discussed.