Synthesis, crystal structure and characterization of new tetranuclear Ag(I) complex with 5-aminoisophthalate

One new AgI complex, [Ag2(aip)(NH3)]n (H2aip = 5-aminoisophthalic acid), has been prepared and structurally and spectroscopically characterized. The title complex crystallizes in the monoclinic system P21/c (no. 14) with a = 6.975(2) Å, b = 8.756(3) Å, c = 16.086(6) Å, β = 97.318(4)°, V = 974.4(6) Å3 and Z = 4. Its structure features a three-dimensional (3D) network composed of two-dimensional (2D) flexuous layer interconnected via weak hydrogen bonds. In aqueous solution, the H2aip exhibits blue emission, while the title complex with tetranuclear silver(I) cores and weak Ag…Ag bonds shows visible intense purple luminescence.