A Response to the Critical Comments on “One Molecule, Two Atoms, Three Views, Four Bonds?”

Authors

  • Dr. David Danovich,

    1. Institute of Chemistry and The Lise Meitner-Minerva Center for Computational Quantum Chemistry, Hebrew University of Jerusalem, 91904, Jerusalem, Israel.
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  • Prof. Sason Shaik,

    Corresponding author
    1. Institute of Chemistry and The Lise Meitner-Minerva Center for Computational Quantum Chemistry, Hebrew University of Jerusalem, 91904, Jerusalem, Israel.
    • Sason Shaik, Institute of Chemistry and The Lise Meitner-Minerva Center for Computational Quantum Chemistry, Hebrew University of Jerusalem, 91904, Jerusalem, Israel.

      Henry S. Rzepa, Department of Chemistry, Imperial College London, South Kensington Campus, London, SW7 2AZ (UK).

      Roald Hoffmann, Baker Laboratory, Department of Chemistry and Chemical Biology, Cornell University, Ithaca, New York 14853-1301, United States

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  • Prof. Henry S. Rzepa,

    Corresponding author
    1. Department of Chemistry, Imperial College London, South Kensington Campus, London, SW7 2AZ (UK).
    • Sason Shaik, Institute of Chemistry and The Lise Meitner-Minerva Center for Computational Quantum Chemistry, Hebrew University of Jerusalem, 91904, Jerusalem, Israel.

      Henry S. Rzepa, Department of Chemistry, Imperial College London, South Kensington Campus, London, SW7 2AZ (UK).

      Roald Hoffmann, Baker Laboratory, Department of Chemistry and Chemical Biology, Cornell University, Ithaca, New York 14853-1301, United States

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  • Prof. Roald Hoffmann

    Corresponding author
    1. Baker Laboratory, Department of Chemistry and Chemical Biology, Cornell University, Ithaca, New York 14853-1301, United States
    • Sason Shaik, Institute of Chemistry and The Lise Meitner-Minerva Center for Computational Quantum Chemistry, Hebrew University of Jerusalem, 91904, Jerusalem, Israel.

      Henry S. Rzepa, Department of Chemistry, Imperial College London, South Kensington Campus, London, SW7 2AZ (UK).

      Roald Hoffmann, Baker Laboratory, Department of Chemistry and Chemical Biology, Cornell University, Ithaca, New York 14853-1301, United States

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Abstract

The criticism expressed by Frenking and Hermann on the notion of quadruple bonding in C2 is answered using hard facts. Both experimental and computational data gauge the strength of the fourth bond as 16 kcal mol−1. The authors agree that chemical research goes profitably beyond “synthetic” chemistry.

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