Phosphonates

14,000,000 Leading Edge Experts on the ideXlab platform

Scan Science and Technology

Contact Leading Edge Experts & Companies

Scan Science and Technology

Contact Leading Edge Experts & Companies

The Experts below are selected from a list of 324 Experts worldwide ranked by ideXlab platform

Mohamed Abarbri - One of the best experts on this subject based on the ideXlab platform.

Emilie Thiery - One of the best experts on this subject based on the ideXlab platform.

Abraham Clearfield - One of the best experts on this subject based on the ideXlab platform.

  • Chapter 1:The Early History and Growth of Metal Phosphonate Chemistry
    Metal Phosphonate Chemistry, 2011
    Co-Authors: Abraham Clearfield
    Abstract:

    This chapter begins with the report by Alberti and co-workers on the synthesis of zirconium Phosphonates. It then provides details on the subsequent development of this class of compounds. The reader is then presented with early studies on divalent and trivalent Phosphonates, with aluminum Phosphonates being treated separately. After a listing of review articles covering the period up to the year 2000, topics of primary interest to the author's research are treated. These include staged materials, functionalization of metal Phosphonates and porous pillared nanostructures of four-valent and aluminum Phosphonates. Applications in catalysis, ion exchange, proton conduction and nuclear separations are described. A final section describes some interesting results concerned with monovalent Phosphonates. The 18 chapters that make up the rest of the book are a testament to the enormous growth and variety of studies in metal phosphonate chemistry.

  • Synthesis and crystal structures of two metal Phosphonates, M(HO3PC6H5)2(M = Ba, Pb)
    Journal of Materials Chemistry, 1996
    Co-Authors: Damodara M Poojary, Sebastian Brogue, Aurelio Cabeza, Baolong Zhang, Miguel A G Aranda, Abraham Clearfield
    Abstract:

    Divalent metal Phosphonates, Ba(HO3PC6H5)2 and Pb(HO3PC6H5)2, have been synthesized and structurally characterized [crystal data: a= 32.18(l), b= 5.546(4), c= 8.495(4)A, β= 103.21(3)°, space group C2/c and Z= 4 for Ba(HO3PC6H5)2; a= 31.8302(10), b= 5.5997(2), c= 8.2935(3)A, β= 101.875(2)°, space group C2/c and Z= 4 for Pb(HO3PC6H5)2]. Their structures are isomorphous. The structure of the barium compound was solved from single-crystal data which was then used to refine the-structure of the lead compound by Rietveld methods. In these compounds the metal: phosphonate ratio is 1 : 2 and the Phosphonates use all their oxygens to bridge the metal atoms, which are arranged in two-dimensional layers, One of the phosphonate oxygens is protonated. The phosphonate oxygens are involved in both chelation and bridging interactions. The metal atoms are eight-coordinate; four of the binding sites are due to symmetry-related positions of a single oxygen atom and two each from the remaining two oxygen atoms.

  • synthesis and crystal structures of two metal Phosphonates m ho3pc6h5 2 m ba pb
    Journal of Materials Chemistry, 1996
    Co-Authors: Damodara M Poojary, Sebastian Brogue, Aurelio Cabeza, Baolong Zhang, Miguel A G Aranda, Abraham Clearfield
    Abstract:

    Divalent metal Phosphonates, Ba(HO3PC6H5)2 and Pb(HO3PC6H5)2, have been synthesized and structurally characterized [crystal data: a= 32.18(l), b= 5.546(4), c= 8.495(4)A, β= 103.21(3)°, space group C2/c and Z= 4 for Ba(HO3PC6H5)2; a= 31.8302(10), b= 5.5997(2), c= 8.2935(3)A, β= 101.875(2)°, space group C2/c and Z= 4 for Pb(HO3PC6H5)2]. Their structures are isomorphous. The structure of the barium compound was solved from single-crystal data which was then used to refine the-structure of the lead compound by Rietveld methods. In these compounds the metal: phosphonate ratio is 1 : 2 and the Phosphonates use all their oxygens to bridge the metal atoms, which are arranged in two-dimensional layers, One of the phosphonate oxygens is protonated. The phosphonate oxygens are involved in both chelation and bridging interactions. The metal atoms are eight-coordinate; four of the binding sites are due to symmetry-related positions of a single oxygen atom and two each from the remaining two oxygen atoms.

Vanny You - One of the best experts on this subject based on the ideXlab platform.

Anne-sophie Mora - One of the best experts on this subject based on the ideXlab platform.