SC–SC Anion-Assisted Linker Exchange within a Three-Dimensional Cu(II)-Triazole Framework: A Luminescent Probe for S2–

A three-dimensional (3D) binodal 3,5-connected net, {[Cu­(MTP)­(H2O)]­(NO3)}n (1) with the Schläfli symbol of {3·72}­{32·75·83} can be transformed into a two-dimensional (2D) kagóme network with the Schlafli symbol of {32·62·72} in an irreversible single crystal–single crystal (SC–SC) guest-assisted linker exchange process. The product of this SC–SC represents the first luminescent probe for S2– based on triazole ligand.