Dialkyldicarbonyl rhenium complexes (η5-C5Me5)Re(CO)2R2, R = Me and Et. X-ray structure of trans-(η5-C5Me5)Re(CO)2Et2

A. Hugo Klahn, Carolina Manzur, Adriana Toro, Madeleine Moore

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The compounds cis-(η5-C5Me5)Re(CO)2Me2 and trans-(η5-C5Me5)Re(CO)2Et2 were prepared by alkylation of cis-(η5-C5Me5)Re(CO)2Cl2 using the corresponding organocopper (RCu). Photolysis of cis(η5-C5Me5)Re(CO)2Me2 in frozen toluene-d8 readily produces the trans-(η5-C5Me5)Re(CO)2Me2. All the compounds were characterized by spectroscopy and analyses, and the stereochemistry assigned from examination of ν(CO) IR intensities; additionally trans-(η5-C5Me5)Re(CO)2Et2 was studied by X-ray crystallography. Crystal data: monoclinic P21/m, a = 8.034(8) Å, b = 11.991(8) Å, c = 8.69(2) Å, β = 91.38°, V = 837(2) Å3, Z = 4, λ(Mo Kα) = 0.7107 Å, RF = 0.0285 and wR1 = 0.071 for 1670 measured reflections with 5 < 2θ < 50°.

Original languageEnglish
Pages (from-to)51-57
Number of pages7
JournalJournal of Organometallic Chemistry
Issue number1-2
StatePublished - 14 Jun 1996


  • Alkyls
  • Crystal structure
  • Cyclopentadienyls
  • Rhenium


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