Syntheses and characterizations of zinc(II) compounds containing three-dimensional interpenetrating diamondoid networks constructed by mixed ligands

Three three-dimensional interpenetrating diamondoid zinc(II) compounds, [Zn(bpe)(OH-BDC)](n) (1), {[Zn(dpe)(OH-BDC)](dpe)(0.5)}(n) (2), and J[Zn(bpp)(OH-BDC)](H2O)}(n) (3), have been prepared solvothermally by assembly of OH-H2BDC, Zn-II with bpe, dpe, and bpp, respectively [OH-H2BDC = 5-hydroxyisophthalic acid, bpe = 1,2-bis(4-pyridyl)ethane, dpe = 1,2-di(4-pyridyl)ethylene, and bpp = 1,3-bi(4-pyridyl)propanel. Single-crystal X-ray diffraction analyses reveal that 1 is a 5-fold interpenetrating diamondoid network, and 2 and 3 are 4-fold interpenetrating diamondoid structures with dpe guest molecules and water molecules, respectively.