Hydrothermal synthesis and characterization of a novel luminescent lead(II) framework extended by novel Pb-μ1,1-(N)CS-Pb bridges

Under hydrothermal conditions, using a triazole derivative ligand 3-carboxylic acid-4H-1,2,4-triazole (HL), lead(II) oxide and NH4NCS, a novel two-dimensional (2D) lead(II) framework {[Pb(L)(μ1,1-NCS)(H2O)]}n (1) can be isolated. For 1 NCS− anions adopt novel μ1,1-(N)CS bridges, which are further extended by tetra-dentate coordinated L ligands to form a 2D corrugated layered structure. Solid-state luminescent spectrum of 1 shows that the excited peak at 375 nm while the low-energy emission peak at 607 nm.