Synthesis, crystal structure and characterizations of a new 3D porous zinc phosphonate: Zn-6[(O3PCH2)(2)NHC6H11](4) center dot 6H(2)O

A new 3D porous zinc phosphonate, Zn-6(HL)(4)center dot 6H(2)O 1 (H4L = C6H11N(CH2PO3H2)(2)) has been synthesized by hydrothermal reaction at 180 degrees C and structurally characterized by X-ray diffraction as well as by infrared spectroscopy, elemental and thermogravimetric analysis. The structure of compound 1 features a 3D open-framework built from ZnO4 tetrahedra linked together by bridging phosphonate groups. Each zinc cation is tetrahedrally coordinated by four phosphonate oxygen atoms from four ligands, each of which connects with six zinc atoms, resulting in channel systems of different size. (C) 2007 Elsevier B.V. All rights reserved