Synthesis of new lamellar iron(III) phosphonates

The behavior of phenylphosphonic acid toward FeOCl is presented as a pathway for the synthesis of lamellar iron(III) phosphonates, and the following adducts have been isolated: HFe(C{sub 6}H{sub 5}PO{sub 3}H){sub 4} and HFe(C{sub 6}H{sub 5}PO{sub 3}){sub 2}{center dot}H{sub 2}O. The quasi-one-dimens...

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Bibliographic Details
Published in:Chemistry of materials 1990-09, Vol.2 (5), p.582-589
Main Authors: Bujoli, B, Palvadeau, P, Rouxel, J
Format: Article
Language:English
Subjects:
360601 - Other Materials- Preparation & Manufacture
CHEMICAL PREPARATION
COHERENT SCATTERING
CRYSTAL LATTICES
CRYSTAL STRUCTURE
DATA
DIFFRACTION
EXPERIMENTAL DATA
INFORMATION
IRON COMPOUNDS
MATERIALS SCIENCE
NUMERICAL DATA
ORGANIC COMPOUNDS
ORGANIC PHOSPHORUS COMPOUNDS
PHOSPHONATES
SCATTERING
SYNTHESIS
TRANSITION ELEMENT COMPOUNDS
TRICLINIC LATTICES
X-RAY DIFFRACTION
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Summary:The behavior of phenylphosphonic acid toward FeOCl is presented as a pathway for the synthesis of lamellar iron(III) phosphonates, and the following adducts have been isolated: HFe(C{sub 6}H{sub 5}PO{sub 3}H){sub 4} and HFe(C{sub 6}H{sub 5}PO{sub 3}){sub 2}{center dot}H{sub 2}O. The quasi-one-dimensional structure of HFe(C{sub 6}H{sub 5}PO{sub 3}H){sub 4} has been determined by X-ray crystallography. The crystals are triclinic, space group P{bar 1} with a = 14.968 (9) {angstrom}, b = 5.36 (1) {angstrom}, c = 8.678 (6) {angstrom}, {alpha} = 88.5 (1){degree}, {beta} = 86.41 (6){degree}, {gamma} = 89.6 (1){degree}, V = 694 (1) {angstrom}{sup 3}, Z = 1. The final R and R{sub w} values were 0.063 and 0.068, respectively. In acetone or toluene this kinetic compound gradually turns into HFe(C{sub 6}H{sub 5}PO{sub 3}){sub 2}{center dot}H{sub 2}O for which a structure close to that of {alpha}-ZrP is proposed. Three crystallographic forms of HFe(C{sub 6}H{sub 5}PO{sub 3}){sub 2}{center dot}H{sub 2}O have been obtained, differing from each other in the location of the water molecule in the layered structure.
ISSN:0897-4756
1520-5002
DOI:10.1021/cm00011a022