Crystal Structure and Thermal Properties of a 2D Silver(I) Coordination Polymer with Semi-Rigid Bis(Pyrazole)

Abstract

An Ag(I) coordination polymer [Ag₂(L)₂(H₂btc)]_n (L = 4,4′-bis(3,5-dimethylpyrazol-1-ylmethyl)-biphenyl, H₄btc = 1,2,4,5-benzenetetracarboxylic acid) is hydrothermally synthesized and characterized by elemental analyses, IR spectroscopy, TGA analysis, and single crystal X-ray diffraction. It crystallizes in the triclinic space group Pī, a = 10.670(8) Å, b = 10.990(8) Å, c = 23.697(2) Å, α = 81.847(10), β = 82.171(10), γ = 80.592(10)°, V = 2695.5(3) ų, Z = 2, D_calc = 1.489 g/cm³, μ = 0.789 mm^–1. The title compound displays a uninodal three-connected hcb/Shubnikov hexagonal plane with {6³} topology, which is further extended into a 3D supramolecular framework via C–H···O interactions.