Isomerization of the osmium-tellurium cluster Os₃(𝜇-TeR)₂(CO)₁₀: a kinetic and computational study

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This article discusses the kinetics for the isomerization of the 50e cluster Os₃(𝜇-TeTol-p)₂(CO)₁₀ as measured experimentally by H NMR spectroscopy.

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5 p.

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Shim, E. K. S.; Leong, W. K.; Li, Y. -Z. & Richmond, Michael G. March 8, 2016.

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This article discusses the kinetics for the isomerization of the 50e cluster Os₃(𝜇-TeTol-p)₂(CO)₁₀ as measured experimentally by H NMR spectroscopy.

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5 p.

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Abstract: The kinetics for the isomerization of the 50e cluster Os3(μ-TeTol-p)2(CO)10 (3), where the tellurides bridge two different Os–Os edges, to one in which the tellurides bridge the same open Os⋯Os edge (4) have been measured experimentally by 1H NMR spectroscopy. The determined activation parameters are ΔH‡ = 77 ± 9 kJ mol−1 and ΔS‡ = −12 ± 28 J mol−1 K. The conversion of 3 to 4 has been computationally investigated by electronic structure calculations using the model compound Os3(μ-TeMe)2(CO)10. The computed isomerization pathway is consistent with the kinetic data and the thermodynamic preference for the product stereoisomer that possesses a slipped, eclipsed conformation for the two p-tolyl groups.

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  • Dalton Transactions, 2016. London, UK: Royal Society of Chemistry

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  • Publication Title: Dalton Transactions
  • Volume: 45
  • Pages: 7158-7162
  • Peer Reviewed: Yes

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  • February 12, 2016

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  • March 8, 2016

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  • March 8, 2016

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  • Aug. 29, 2017, 9:38 a.m.

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Shim, E. K. S.; Leong, W. K.; Li, Y. -Z. & Richmond, Michael G. Isomerization of the osmium-tellurium cluster Os₃(𝜇-TeR)₂(CO)₁₀: a kinetic and computational study, article, March 8, 2016; London, United Kingdom. (digital.library.unt.edu/ark:/67531/metadc990951/: accessed October 22, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT College of Arts and Sciences.