Ordering of ruthenium cluster carbonyls in mesoporous silica

Science

Volumn 280, Issue 5364, 1998, Pages 705-708

  Zhou, Wuzong ^a   Thomas, John Meurig ^a,b   Shephard, Douglas S ^a   Johnson, Brian F G ^a   Ozkaya, Don ^a   Maschmeyer, Thomas ^a,b   Bell, Robert G ^b   Ge, Qingfeng ^a  

^a UNIVERSITY OF CAMBRIDGE   (United Kingdom)

^b DAVY FARADAY RESEARCH LABORATORY   (United Kingdom)

Author keywords

[No Author keywords available]

Indexed keywords

RUTHENIUM; SILICON DIOXIDE;

ARTICLE; CHEMICAL ANALYSIS; COMPUTER SIMULATION; FOURIER TRANSFORMATION; PRIORITY JOURNAL; STRUCTURE ANALYSIS; TRANSMISSION ELECTRON MICROSCOPY;

EID: 0032076223     PISSN: 00368075     EISSN: None     Source Type: Journal    
DOI: 10.1126/science.280.5364.705     Document Type: Article

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33. 2 solvation shell is substituted by the silanol groups. The solvent molecules enable repetition of this cycle: Entropy change provides the driving force for the anions to enter the mesopores by way of substituting for loosely held solvent molecules, whereas the drop in enthalpy directs the ordering of the sorbed clusters onto the pore walls.
34. -1 (w, weak; m, medium; s, strong; vs, very strong; sh, shoulder).
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39. Although STEM images display less contrast than the corresponding HRTEM images, STEM enables shorter exposure times, hence electron-beam damage is reduced.
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42. 2 were loaded with an intercluster distance of 2.66 nm.
43. -1 was calculated.
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46. Supported by an Engineering and Physical Sciences Research Council (UK) rolling grant (J.M.T.), post-doctoral 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.