Novel Layered Organic–Inorganic Networks Assembled From PbI2 and N,N-bis(3pyridylmethyl)-1,4-biphenylenedimethyleneimine

Two novel metal-organic frameworks with different structures were obtained by reactions of PbI2 with N,Nʹ-bis(3pyridylmethyl)-1,4-biphenylenedimethyleneimine (L) under different M/L ratios. When the M/L ratio is 1:1, L bridges [PbI2]n chains to form a layered organic–inorganic hybrid compound with the empirical formula [Pb(L)I2] (1). When changing the M/L ratio to 2:1, L bridges the double chains [Pb2I4]n to form networks [Pb2(L)I4] (2), which are further linked by C–H···I hydrogen bonds to give a 3D structure.