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Updated: Dec 30, 2025

Author Spotlight: Functionalizing Metal-Organic Frameworks: Advancements, Challenges, and the Power of Post-Synthetic Ligand Exchange
Published on: June 23, 2023
Metathetical Exchange between Metal-Metal Triple Bonds
Joshua D Queen1, Alice C Phung1, Christine A Caputo1
1Department of Chemistry , University of California , One Shields Ave , Davis , California 95616 , United States.
Abstract:
The reaction of the molybdenum-molybdenum triple-bonded dimer (CO)2CpMo≡MoCp(CO)2 (Cp = η5-C5H5) with the triple-bonded dimetallynes ArMMAr or ArMMAr (Ar = C6H3-2,6-(C6H3-2,6-Pr2)2, Ar = C6H3-2,6-(C6H2-2,4,6-Pr3)2; M = Ge, Sn, or Pb) under mild conditions (≤80 °C, 1 bar) afforded ArM≡MoCp(CO)2 or ArM≡MoCp(CO)2 in moderate to excellent yields. The reactions represent the first isolable products from a metathesis of two metal-metal triple bonds. Analogous exchange reactions with the single-bonded (CO)3CpMo-MoCp(CO)3 gave ArM̈-MoCp(CO)3 (Ar = Ar or Ar; M = Sn or Pb). The products were characterized by NMR (1H, 13C, 119Sn, or 207Pb), electronic, and IR spectroscopy and by X-ray crystallography.
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