Reactions of Co sup + , Ni sup + , and Cu sup + with cyclopropane and ethylene oxide. Metal-methylidene ion bond energies

Journal Article · Thu Feb 22 04:00:00 EST 1990 · Journal of Physical Chemistry; (USA)

DOI:https://doi.org/10.1021/j100367a083· OSTI ID:6712343

Fisher, E R; Armentrout, P B ^[1]

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1. Univ. of Utah, Salt Lake City (USA)

The reactions of atomic cobalt, nickel, and copper ions with cyclopropane and ethylene oxide have been studied by using guided ion beam mass spectrometry. A predominant process in all these systems is formation of MCH{sub 2}{sup +}. Analyses of these endothermic reactions yield the bond energies D{sup 0} (Co{sup +}-CH{sub 2}) = 77.5 {plus minus} 2.3 kcal/mol, D{sup 0}(Ni{sup +}-CH{sub 2}) = 75.2 {plus minus} 1.8 kcal/mol, and D{sup 0}(Cu{sup +}-CH{sub 2}) = 63.9 {plus minus} 1.6 kcal/mol. Differences between these values and those derived from earlier studies for Co{sup +} and Ni{sup +} are discussed. In addition to D{sup 0} (M{sup +}-CH{sub 2}), bond energies for Co{sup +}-H, M-H, (M = Co, Ni, Cu) and M{sup +}-O and M-O (M = Co, Ni) are evaluated and lower limits are placed on D{sup 0} (M{sup +}-C{sub 2}H{sub 4}) and D{sup 0} (M{sup +}-C{sub 2}H{sub 2}) (M = Co, Ni, Cu). The reaction mechanism for these reactions is also discussed in detail.

• OSTI ID: 6712343
• Journal Information: Journal of Physical Chemistry; (USA), Journal Name: Journal of Physical Chemistry; (USA) Vol. 94:4; ISSN JPCHA; ISSN 0022-3654
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201* -- Chemical & Physicochemical Properties
ALKANES
ALKENES
BEAMS
CALCULATION METHODS
CHARGED PARTICLES
CHEMICAL REACTIONS
COBALT IONS
COPPER IONS
CYCLOALKANES
DATA
DATA ANALYSIS
ETHYLENE
EXPERIMENTAL DATA
HYDROCARBONS
INFORMATION
ION BEAMS
IONS
MASS SPECTROSCOPY
MEASURING INSTRUMENTS
MEASURING METHODS
NICKEL IONS
NUMERICAL DATA
ORGANIC COMPOUNDS
SPECTROSCOPY