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Structural and Catalytic Studies of a Trimethyltin Vanadate Coordination Polymer

  • Marta Abrantes
  • Maria Salete Balula
  • Anabela A. Valente
  • Filipe A. Almeida Paz
  • Martyn Pillinger
  • Carlos C. Romão
  • João Rocha
  • Isabel S. Gonçalves
Article

Abstract

The organotin vanadate [Me3SnVO3] (1) has been prepared and characterised in the solid state by powder X-ray diffraction (XRD), thermogravimetric analysis, multinuclear magic-angle spinning (MAS) NMR, IR and Raman spectroscopy. The phase purity and structure of microcrystalline 1 were confirmed by carrying out a full Rietveld structural refinement at ambient temperature and from conventional powder XRD. 51V and 119Sn MAS NMR data for compound 1 were in agreement with the predicted structure, showing two equally-abundant, nonequivalent Me3Sn groups and two equally-abundant, nonequivalent vanadium atoms. The compound was applied as a catalyst for the liquid-phase epoxidation of olefins at 55 °C using tert-butyl hydroperoxide (tBuOOH) as the oxidant. The reaction rate for the different substrates followed the order cis-cyclooctene > (R)-(+)-limonene ≅ trans-2-octene > cyclododecene > styrene > 1-octene; the corresponding epoxides were the only observed products. Leaching tests indicated that the catalytic epoxidation of cyclooctene was mainly heterogeneous in nature.

Keywords

Vanadium(V) metavanadate trimethyltin(IV) coordination polymer olefin epoxidation 

Notes

Acknowledgments

The authors are grateful to the FCT, OE and FEDER for funding (Project POCI/CTM/58507/2004). MA thanks the FCT for a PhD grant.

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Copyright information

© Springer Science+Business Media, LLC 2007

Authors and Affiliations

  • Marta Abrantes
    • 1
  • Maria Salete Balula
    • 2
  • Anabela A. Valente
    • 2
  • Filipe A. Almeida Paz
    • 2
  • Martyn Pillinger
    • 2
  • Carlos C. Romão
    • 1
  • João Rocha
    • 2
  • Isabel S. Gonçalves
    • 2
  1. 1.Instituto de Tecnologia Química e Biológica da Universidade Nova de LisboaOeirasPortugal
  2. 2.Department of ChemistryCICECO, University of AveiroAveiroPortugal

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