Transition-Metal Ethene Bonds: Thermochemistry of M+(C2H4)n (M = Ti−Cu, n = 1 and 2) Complexes

Autor:	M. R. Sievers, L. M. Jarvis, P. B. Armentrout
Rok vydání:	1998
Předmět:	Ion beam Chemistry Analytical chemistry General Chemistry Mass spectrometry Biochemistry Catalysis Dissociation (chemistry) Metal Colloid and Surface Chemistry Transition metal Computational chemistry visual_art visual_art.visual_art_medium Thermochemistry Molecule Bond energy
Zdroj:	Journal of the American Chemical Society. 120:1891-1899
ISSN:	1520-5126 0002-7863
Popis:	Complexes of the first-row transition-metal cations (Ti+−Cu+) with one and two ethene molecules are studied by guided ion beam mass spectrometry. Thermalized complexes are formed in a flow tube source and examined by energy-resolved collision-induced dissociation with Xe. The energy dependence of the CID cross sections is analyzed with consideration of multiple collisions, internal energy of the reactants, and lifetime effects. First, D0(M+−C2H4), and second, D0(C2H4M+−C2H4), adiabatic metal ion ethene bond energies, in eV, obtained in this study are 1.51 ± 0.11 for Ti (first bond only), 1.29 ± 0.08 and 1.32 ± 0.14 for V, 0.99 ± 0.11 and 1.12 ± 0.11 for Cr, 0.94 ± 0.12 and 0.91 ± 0.15 for Mn, 1.50 ± 0.11 and 1.57 ± 0.16 for Fe, 1.93 ± 0.09 and 1.58 ± 0.14 for Co, 1.89 ± 0.11 and 1.79 ± 0.15 for Ni, and 1.82 ± 0.14 and 1.80 ± 0.13 for Cu, respectively. These values include corrections for diabatic dissociation in the cases of Fe+(C2H4) and Mn+(C2H4)2, a point that is discussed in detail. Previous work obta...
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::241e4ec08711f8318e7cd62ec15908db https://doi.org/10.1021/ja973834z Zobrazit plný text záznamu