Synthesis, characterization and crystal structure of a porous crystalline material

摘要

An exploration of the nickel-malate-bpp system under hydrothermal conditions, has led to the isolation of a novel framework {[Ni(Hmal)(bpp)]center dot 5H(2)O}(n) (1) (Hmal = malate dianion, bpp = 1,3-bi(4-pyridyl)propane). Single-crystal X-ray analyses reveal that it crystallizes in the orthorhombic space group Peen. a = 21.141(3) angstrom, b = 10.4028(16) angstrom, c = 19.250(3) angstrom. The Ni(II) ions are linked into an extended helical chain via Finial molecules. Further these chains are united together through the bridging bpp to form a 3D porous framework, which exhibits an unusual NbO-type topological network. (C) 2008 WILEY-VCH Verlag GmbH & Co. KGaA. Weinheim