Synthesis and structure of Na+ intercalated WO3(4,4'-bipyridyl)0.5

Islah Udin; Matthew R. Fox; Helene Martin; Graeme J. Gainsford; John Kennedy; Andreas Markwitz; Shane G. Telfer; Geoffrey B. Jameson; Jeffery L. Tallon

Synthesis and structure of Na+ intercalated WO3(4,4'-bipyridyl)0.5

Materials Science 2009-09-29 v1

Authors: Islah Udin , Matthew R. Fox , Helene Martin , Graeme J. Gainsford , John Kennedy , Andreas Markwitz , Shane G. Telfer , Geoffrey B. Jameson , Jeffery L. Tallon

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Abstract

We have prepared single crystals of WO3(4,4'-bipyridyl)0.5 and doped these by Na-ion implantation. The structure of the resultant NaxWO3(4,4'-bipyridyl)0.5 was determined by single-crystal x-ray diffraction to comprise atomic layers of corner-shared WO5N octahedra linked by the 4,4'-bypyridine via the apical nitrogen. In the observed space group of Pbca, the fully ordered bipyridyl molecules define cage-shaped structures, not the channels erroneously reported previously for the Cmca polymorph. The Na ions are disordered bimodally about the cage centre, displaced in the c-direction so as to lie closer to the apical oxygens.

Keywords

sodium intercalation tungsten oxide bipyridyl single-crystal x-ray diffraction cage structure space group Pbca

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@article{arxiv.0909.4982,
  title  = {Synthesis and structure of Na+ intercalated WO3(4,4'-bipyridyl)0.5},
  author = {Islah Udin and Matthew R. Fox and Helene Martin and Graeme J. Gainsford and John Kennedy and Andreas Markwitz and Shane G. Telfer and Geoffrey B. Jameson and Jeffery L. Tallon},
  journal= {arXiv preprint arXiv:0909.4982},
  year   = {2009}
}

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3 pages, 2 figures

Synthesis and structure of Na+ intercalated WO3(4,4'-bipyridyl)0.5

Abstract

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