Response to the Comment by J. Grunenberg on "The Nature of the Fourth Bond in the Ground State of C2: The Quadruple Bond Conundrum''.
The quadruple bond structure in C2 emerges from solid quantum-chemical calculations and won't go away! There is no mystery in the rather small bond dissociation energy, and this cannot constitute the reason to reconsider the whole concept of quadruple bonding.
Institute of Chemistry and The Lise Meitner-Minerva Center for Computational Quantum Chemistry, Hebrew University of Jerusalem, 91904, Jerusalem (Israel). sason.shaik@gmail.com.
Sason
S
Shaik
Institute of Chemistry and The Lise Meitner-Minerva Center for Computational Quantum Chemistry, Hebrew University of Jerusalem, 91904, Jerusalem (Israel).
David
D
Danovich
Laboratoire de Chimie Physique, UMR CNRS 8000, Université de Paris Sud, 91405 Orsay Cédex (France). philippe.hiberty@u-psud.fr.
Philippe C
PC
Hiberty
C2; bond order; bonding; force constants; valence bond