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Addition of Pt(IPr) Groupings to Ru5 Carbide Gives New Mixed-Metal Pt–Ru Cluster Complexes

Journal of Cluster Science volume 27, pages 1671–1681 (2016)Cite this article

Abstract

The reaction of Pt(IPr)(SnBu t3 )(H), 1 [IPr = N-heterocylic carbene ligand N,N ′-bis-(2,6-(diisopropyl) phenyl)imidazol-2-ylidene] with Ru5(μ 5 -C)(CO)15, 2, in 1.2:1 (and 2.2:1) ratio in benzene solvent at refluxing temperature afforded the octahedral monoplatinum–pentaruthenium cluster complexes PtRu5(IPr)(CO)15(μ 6 -C), 3 in 54 % (10 %) yield, PtRu5(IPr)(CO)14(H)2(μ 6 -C), 4 in 6 % (10 %) yield and the diplatinum–pentaruthenium cluster complex Pt2Ru5(IPr)2(CO)15(μ 6 -C), 5 in 2 % (36 %)yield. Complex 3 readily reacts with H2 at room temperature to give complex 4. Compound 5 exhibits dynamical activity in solution where the two Pt(IPr) groups are exchanging rapidly. All three compounds were structurally characterized by single-crystal X-ray diffraction analyses.

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Acknowledgment

The National Science Foundation (CHE-1300206) is gratefully acknowledged for support of this work as well as for providing funds towards the purchase of LC–ESI–MS (CHE-0946858).

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Authors and Affiliations

  1. Department of Chemistry, University of Miami, Coral Gables, FL, 33124, USA

    Anjaneyulu Koppaka, Vincent Zollo Jr., Sedigheh Etezadi & Burjor Captain

  2. Department of Chemistry, Ohio Wesleyan University, Delaware, OH, 43015, USA

    David C. Lever

Authors
  1. Anjaneyulu Koppaka
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  2. Vincent Zollo Jr.
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  3. Sedigheh Etezadi
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Correspondence to Burjor Captain.

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Koppaka, A., Zollo, V., Etezadi, S. et al. Addition of Pt(IPr) Groupings to Ru5 Carbide Gives New Mixed-Metal Pt–Ru Cluster Complexes. J Clust Sci 27, 1671–1681 (2016). https://doi.org/10.1007/s10876-016-1031-x

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  • DOI: https://doi.org/10.1007/s10876-016-1031-x

Keywords

  • Platinum
  • Cluster
  • Bimetallic
  • Interconversion
  • N-heterocylic carbene

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