Synthesis and characterization of μ3222- C60 trirhenium hydrido cluster complexes

Hyunjoon Song, Yumi Lee, Zel Ho Choi, Kwangyeol Lee, Joon T. Park, Juhyoun Kwak, Moon Gun Choi

Research output: Contribution to journalArticle

32 Citations (Scopus)

Abstract

The reaction of C60 with Re3(μ-H)3(CO)11(NCMe) in refluxing chlorobenzene produces Re3(μ-H)3(CO)93- η222-C60) (1) in 50% yield. Initial decarbonylation of 1 with Me3NO/MeCN followed by reaction with PPh3 in boiling chlorobenzene affords Re3(μ-H)3(CO)8(PPh3)- (μ3222- C60) (2) in a low yield (26%). Treatment of 1 with PhCH2N=PPh3 at room temperature gives a benzyl isocyanide substituted product Re3(μ-H)3(CO)8(CNCH2Ph) (μ3 η222-C60) (3) in 53% yield. Compounds 1, 2, and 3 have been isolated as crystalline solids and characterized by spectroscopic (infrared, mass, 1H, 31P, and 13C NMR) and analytical data. The structure of 3 has been determined by a single-crystal X-ray diffraction study. The C60 ligand is coordinated to the trirhenium triangle in a μ3222 bonding mode, and the benzyl isocyanide ligand occupies an axial position of a rhenium atom. Electrochemical properties of 1 and 2 have been studied by cyclic voltammetry (CV) in chlorobenzene (CB) solutions. The general features of CV curves have revealed four reversible redox couples for 1 and 2 in the CB potential window. The CV results suggest that a C60-mediated electron transfer to the trirhenium center takes place in 12- species for 1 and 23- for 2.

Original languageEnglish
Pages (from-to)3139-3144
Number of pages6
JournalOrganometallics
Volume20
Issue number14
DOIs
Publication statusPublished - 2001 Jul 9
Externally publishedYes

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Organic Chemistry
  • Inorganic Chemistry

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    Song, H., Lee, Y., Choi, Z. H., Lee, K., Park, J. T., Kwak, J., & Choi, M. G. (2001). Synthesis and characterization of μ3222- C60 trirhenium hydrido cluster complexes. Organometallics, 20(14), 3139-3144. https://doi.org/10.1021/om0101341