Ordering of Ruthenium Cluster Carbonyls in Mesoporous Silica
10.1126/science.280.5364.705
Crossref journal-article
American Association for the Advancement of Science (AAAS)
Science (221)
Abstract

The anionic ruthenium cluster carbonylates [Ru 6 C(CO) 16 ] 2– or [H 2 Ru 10 (CO) 25 ] 2– interspersed with bis(triphenylphosphino)iminium counterions (PPN + ) are incorporated from solution into the pores of MCM-41 mesoporous silica (3 nanometers in diameter), where they form tightly packed arrays. These arrays were shown by high-resolution transmission electron microscopy, Fourier transform optical diffraction, and computer simulations to be well ordered both along and perpendicular to the axis of the cylindrical pores. In their denuded state produced by gentle thermolysis, the cluster carbonylates yield nanoparticles of ruthenium that are less well ordered than their assimilated precursors but show good activity as hydrogenation catalysts for hexene and cyclooctene. In both their as-prepared and denuded states, these encapsulated clusters are likely to exhibit interesting electronic and other properties.

Authors 8
  1. Wuzong Zhou (first)
  2. John Meurig Thomas (additional)
  3. Douglas S. Shephard (additional)
  4. Brian F. G. Johnson (additional)
  5. Don Ozkaya (additional)
  6. Thomas Maschmeyer (additional)
  7. Robert G. Bell (additional)
  8. Qingfeng Ge (additional)
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  31. Supported by an Engineering and Physical Sciences Research Council (UK) rolling grant (J.M.T.) postdoctoral research award (B.F.G.J.) a European Union (EU) TMR award (B.F.G.J.) an EU Fellowship TMR (T.M.) the University of Cambridge and the Royal Society for the Smithson Research Fellowship (Peterhouse) (D.S.S.). W.Z. thanks D. A. Jefferson for many helpful discussions.
Dates
Type When
Created 23 years ago (July 27, 2002, 5:42 a.m.)
Deposited 1 year, 7 months ago (Jan. 13, 2024, 12:14 a.m.)
Indexed 1 month, 2 weeks ago (July 7, 2025, 9:06 a.m.)
Issued 27 years, 3 months ago (May 1, 1998)
Published 27 years, 3 months ago (May 1, 1998)
Published Print 27 years, 3 months ago (May 1, 1998)
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@article{Zhou_1998, title={Ordering of Ruthenium Cluster Carbonyls in Mesoporous Silica}, volume={280}, ISSN={1095-9203}, url={http://dx.doi.org/10.1126/science.280.5364.705}, DOI={10.1126/science.280.5364.705}, number={5364}, journal={Science}, publisher={American Association for the Advancement of Science (AAAS)}, author={Zhou, Wuzong and Thomas, John Meurig and Shephard, Douglas S. and Johnson, Brian F. G. and Ozkaya, Don and Maschmeyer, Thomas and Bell, Robert G. and Ge, Qingfeng}, year={1998}, month=may, pages={705–708} }