Hydrothermal synthesis and crystal structure of a new family of lanthanide phosphonates: [H3N(CH2)4NH3]Ln[hedpH2][hedpH]

Roces, Laura; García-Granda, S.; García, J.R.; Liu, F.; Carlos, Luís D.; Rocha, João

doi:10.1107/s0108767306094645

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“…] allow the construction of metal phosphonate materials with new architectures, including open framework structures [3,4] and porous pillared layered structures [5,6] 2 ], with Ln = La, Pr, Sm, Tb and Er has been recently reported by our research group [7,8] and the crystal structure of the La compound was already published by Liu and collaborators [9]. Following with the work previously developed [10] we present here the results of the structural study for seven components of the family (Ln= La, Pr, Sm, Eu, Gd, Tb and Er) using their synchrotron XRPD data and the La X-ray single crystal data.…”

Section: -mentioning

confidence: 99%

New lanthanide phosphonates structures obtained using XRPD data

Fernández-Zapico¹,

Montejo-Bernardo²,

García-Granda³

et al. 2011

European Powder Diffraction Conference; August 2010, Darmstadt, Germany

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Abstract. Seven lanthanide diphosphonates, [H 3 N(CH 2 ) 4 NH 3 ]Ln[hedpH][hedpH 2 ] (Ln = La, Pr, Sm, Eu, Gd, Tb, Er; hedp = 1-hydroxyethylidenediphosphonate) have been synthesized with 1,4-diaminobutane as the template. The structures were obtained starting from the known X-ray single crystal model of lanthanum compound, with the X-ray powder diffraction data for these seven compounds. H-atoms were introduced using geometrical considerations. Rietveld fits of the experimental diffractograms confirm the isostructurality of all compounds in the series, and show the different behaviour between the two distances M-M existing in the structures.

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