title: Monocarbon cationic cluster yields from N2/CH4 mixtures embedded in He nanodroplets and their calculated binding energies.
abstract: The formation of monocarbon cluster ions has been investigated by electron ionization mass spectrometry of cold helium nanodroplets doped with nitrogen/methane mixtures. Ion yields for two groups of clusters, CHmN2(+) or CHmN4(+), were determined for mixtures with different molecular ratios of CH4. The possible geometrical structures of these clusters were analyzed using electronic structure computations. Little correlation between the ion yields and the associated binding energies has been observed indicating that in most cases kinetic control is more important than thermodynamic control for forming the clusters.
authors: Radiation Laboratory, University of Notre Dame, Notre Dame, Indiana 46556, USA.
authors: Iogann
authors: I
authors: Tolbatov
authors: Institut für Ionenphysik und Angewandte Physik and Center of Molecular Biosciences Innsbruck, Universität Innsbruck, Technikerstraße 25, A-6020 Innsbruck, Austria.
authors: Peter
authors: P
authors: Bartl
authors: Radiation Laboratory, University of Notre Dame, Notre Dame, Indiana 46556, USA.
authors: James
authors: J
authors: Yurkovich
authors: Institut für Ionenphysik und Angewandte Physik and Center of Molecular Biosciences Innsbruck, Universität Innsbruck, Technikerstraße 25, A-6020 Innsbruck, Austria.
authors: Paul
authors: P
authors: Scheier
authors: Radiation Laboratory, University of Notre Dame, Notre Dame, Indiana 46556, USA.
authors: Daniel M
authors: DM
authors: Chipman
authors: Institut für Ionenphysik und Angewandte Physik and Center of Molecular Biosciences Innsbruck, Universität Innsbruck, Technikerstraße 25, A-6020 Innsbruck, Austria.
authors: Stephan
authors: S
authors: Denifl
authors: Radiation Laboratory, University of Notre Dame, Notre Dame, Indiana 46556, USA.
authors: Sylwia
authors: S
authors: Ptasinska
mesh_terms: D002244:Carbon / Q000737:chemistry*; D002412:Cations / Q000737:chemistry; D006371:Helium / Q000737:chemistry*; D013058:Mass Spectrometry; D008697:Methane / Q000737:chemistry*; D008958:Models, Molecular; D049329:Nanostructures / Q000737:chemistry*; D009584:Nitrogen / Q000737:chemistry*; D013816:Thermodynamics
chemical_list: D002412:Cations; D006371:Helium; D002244:Carbon; D009584:Nitrogen; D008697:Methane