title: A Response to a Comment by G. Frenking and M. Hermann on: "The Quadruple Bonding in C2Reproduces the Properties of the Molecule".
abstract: In response to the comment by Frenking and Hermann on our work in this journal (Chem. Eur J. 2016, 22, 4116) it is is shown once again that C2has a quadruple bond with three strong bonds and one weaker exo-bond. All other bonding forms are less stable.
authors.affiliation: Institute of Chemistry and The Lise Meitner-Minerva Center for Computational Quantum Chemistry, The Hebrew University, Jerusalem, 91904, Israel.
authors.forename: Sason
authors.identifier: http://orcid.org/0000-0001-7643-9421
authors.initials: S
authors.lastname: Shaik
authors.affiliation: Institute of Chemistry and The Lise Meitner-Minerva Center for Computational Quantum Chemistry, The Hebrew University, Jerusalem, 91904, Israel.
authors.forename: David
authors.identifier: http://orcid.org/0000-0002-8730-5119
authors.initials: D
authors.lastname: Danovich
authors.affiliation: Sorbonne Universités, UPMC Univ Paris 06, CNRS, Laboratoire de Chimie Théorique (LCT) cc 137-4. place Jussieu, 75252, Paris CEDEX 05, France.
authors.forename: Benoit
authors.initials: B
authors.lastname: Braida
authors.affiliation: Laboratoire de Chimie Physique, UMR CNRS 8000, Université de Paris Sud, 91405, Orsay Cédex, France.
authors.forename: Philippe C
authors.initials: PC
authors.lastname: Hiberty
keywords: C2; bond order; bond strength; bonding analysis; promotion energy; quadruple bonds; valence bonds