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Synthesis, Structure and Magnetic Properties of Some New Metal(II) Phosphonates: Layered Fe(C2H5PO3).H2O, α-Cu(C2H5PO3) and Co(t-C4H9PO3).H2O, Tubular β-Cu(CH3PO3)

Published online by Cambridge University Press:  21 February 2011

Bruno Bujoli ,
J. Le Bedeau ,
C. Payen ,
P. Palvadeau  and
J. Rouxel
Bruno Bujoli
Affiliation:
Laboratoire de Synthèse Organique, CNRS-URA 475, 2 rue de la Houssinière, 44072 Nantes Cedex 03, France.
J. Le Bedeau
Affiliation:
Institut des Matériaux, CNRS-UMR 110, 2 rue de la Houssinière, 44072 Nantes Cedex 03, France.
C. Payen
Affiliation:
Institut des Matériaux, CNRS-UMR 110, 2 rue de la Houssinière, 44072 Nantes Cedex 03, France.
P. Palvadeau
Affiliation:
Institut des Matériaux, CNRS-UMR 110, 2 rue de la Houssinière, 44072 Nantes Cedex 03, France.
J. Rouxel
Affiliation:
Institut des Matériaux, CNRS-UMR 110, 2 rue de la Houssinière, 44072 Nantes Cedex 03, France.
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Abstract

Fe(II)C2H5PO3. H2O has been prepared via prolonged reaction between iron oxychloride and ethylphosphonic acid in acetone, in a sealed tube. The lamellar structure is very similar to that of previously reported divalent metal phosphonates M(II)(RPO3). H2O (M= Mg, Mn, Ni, Zn). The compound shows sign of 2D antiferromagnetic correlations above the Néel temperature Tn=24K and a weak ferromagnetic behavior is observed below TN. We also report on the preparation methods and the crystal structures of two new anhydrous copper phosphonates a-Cu(II)(C2H5PO3), and β-Cu(II)(CH3PO3) which exhibits an original tubular three-dimensional structure. The reactivity of bulky phosphonic acids is also described, with the case of Co(II)(t-C4H9PO3).H2O.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 346: Symposium N – Better Ceramics Through Chemistry VI , 1994 , 967
Copyright
Copyright © Materials Research Society 1998

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References

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