Synthesis, characterization and crystal structure of a 2D Cd(II) complex with a 4,4'-diazenediyldiphthalic acid ligand

An exploration of the cadmium-L system under hydrothermal condition, has led to the isolation of a novel framework {[Cd(L)0.5(H2O)3]}n (1) (H4L = 4,4'-diazenediyldiphthalic acid). Single-crystal X-ray analysis reveals that it crystallizes in the triclinic space group P-1. a = 5.746(3) A, b =6.526(4) A, c = 14.701(8) A, α=92.348(8), β = 99.622(6), γ=106.877(7)°. The CdII ions are linked into an extended 2-D rectangle-like structure via L ligands, which exhibits an attractive three-connected honeycomb topological network. (© 2008 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim)