skip to main content

Title: Bond Energies of Adsorbed Intermediates to Metal Surfaces: Correlation with Hydrogen–Ligand and Hydrogen–Surface Bond Energies and Electronegativities
Authors:
 ;  ;  
Award ID(s):
1665077
Publication Date:
NSF-PAR ID:
10079994
Journal Name:
Angewandte Chemie International Edition
Volume:
57
Issue:
51
Page Range or eLocation-ID:
p. 16877-16881
ISSN:
1433-7851
Publisher:
Wiley Blackwell (John Wiley & Sons)
Sponsoring Org:
National Science Foundation
More Like this
  1. Two-photon ionization thresholds of RuB, RhB, OsB, IrB, and PtB have been measured using resonant two-photon ionization spectroscopy in a jet-cooled molecular beam and have been used to derive the adiabatic ionization energies of these molecules. From the measured two-photon ionization thresholds, IE(RuB) = 7.879(9) eV, IE(RhB) = 8.234(10) eV, IE(OsB) = 7.955(9) eV, IE(IrB) = 8.301(15) eV, and IE(PtB) = 8.524(10) eV have been assigned. By employing a thermochemical cycle, cationic bond dissociation energies of these molecules have also been derived, giving D0(Ru+–B) = 4.297(9) eV, D0(Rh+–B) = 4.477(10) eV, D0(Os–B+) = 4.721(9) eV, D0(Ir–B+) = 4.925(18) eV, and D0(Pt–B+) = 5.009(10) eV. The electronic structures of the resulting cationic transition metal monoborides (MB+) have been elucidated using quantum chemical calculations. Periodic trends of the MB+molecules and comparisons to their neutral counterparts are discussed. The possibility of quadruple chemical bonds in all of these cationic transition metal monoborides is also discussed.