Hydrothermal synthesis, crystal structure and photoluminescence of a novel two-dimensional cadmium(II) complex: {[Cd(bpds)(bpp)₂] · 2H₂O}_n

A novel two-dimensional cadmium(II) complex {[Cd(bpds)(bpp)2] -2H ₂O)_n (1) with 4,4′-biphenyldisulfonic acid (H ₂bpds) and 1,3-bis(4-pyridyl)propane (bpp) has been synthesized by means of hydrothermal method and characterized by elemental analysis, IR spectrum, thermal analysis and single-crystal X-ray diffraction. The crystal is of triclinic, space group P1̄ with a=0.900 96(12) nm, b = 1.098 84(14) nm, c=1.125 71(15) nm, α=\ 15.907(2)°, β= 92.307 (2)°, γ=105.383 (2)°, V=0.9508(2) nm³, D_c=1.497 g·cm^-3, Z=1, F(000)=440, Goof=1.046, R₁̈,=0.028 2, wR₂= 0.074 9. Complex 1 shows a novel two-dimensional (2D) lamellar structure and further extended into a 3D supramolecular structure through O-H⋯O and C-H⋯O hydrogen bonding interactions. Luminescent studies show that complex 1 exhibits intense blue fluorescent emission.