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Issue 2, 2002
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Synthesis and characterization of new layered mixed metal phosphonate materials magnesium–zinc phosphonates Mg1 − xZnx(O3PR)·H2O and nickel–zinc phosphonates Ni1 − xZnx(O3PR)·H2O using mixed divalent magnesium–zinc and nickel–zinc hydroxides

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Abstract

Layered mixed divalent metal phosphonates Mg1 − xZnx(O3PR)·H2O [with R = CH3, C2H3, C6H5] and Ni1 − xZnx(O3PR)·H2O [with R = CH3, C2H3, C6H5, (CH2)2COOH] have been prepared by heating, respectively, mixed divalent magnesium–zinc hydroxides and nickel–zinc hydroxides above the melting point of the phosphonic acid being used. A range of pre-formed mixed divalent metal hydroxides Mg1 − xZnx(OH)2 and Ni1 − xZnx(OH)2 with different ratios of Zn content (x = 0, 0.1, 0.25, 0.5) are obtained by isomorphous substitution of zinc into the, respective, Mg(OH)2 and Ni(OH)2 brucite-type structure: space group P[3 with combining macron]m1; a = 3.13–3.15 Å, c = 4.63–4.77 Å). The phosphonate materials have been characterized by X-ray powder diffraction, IR, TGA, and 31P MAS NMR. Mg1 − xZnx(O3PR)·H2O and Ni1 − xZnx(O3PR)·H2O crystallize in an orthorhombic system with space group Pmn21 with b = 5.55–5.69 Å, c = 4.71–4.86 Å and a varying according to the size of the organic group R.

Graphical abstract: Synthesis and characterization of new layered mixed metal phosphonate materials magnesium–zinc phosphonates Mg1 − xZnx(O3PR)·H2O and nickel–zinc phosphonates Ni1 − xZnx(O3PR)·H2O using mixed divalent magnesium–zinc and nickel–zinc hydroxides

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Publication details

The article was received on 26 Jun 2001, accepted on 25 Oct 2001 and first published on 18 Dec 2001


Article type: Paper
DOI: 10.1039/B105559N
J. Mater. Chem., 2002,12, 350-355

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    Synthesis and characterization of new layered mixed metal phosphonate materials magnesium–zinc phosphonates Mg1 − xZnx(O3PR)·H2O and nickel–zinc phosphonates Ni1 − xZnx(O3PR)·H2O using mixed divalent magnesium–zinc and nickel–zinc hydroxides

    B. Menaa and I. J. Shannon, J. Mater. Chem., 2002, 12, 350
    DOI: 10.1039/B105559N

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