Preparation and reactions of Cr/sup -/. The Cr-H bond strength
Journal Article
·
· J. Am. Chem. Soc.; (United States)
A Fourier transform mass spectrometer utilizing collision-induced dissociation (CID) of anionic chromium (Cr) carbonyl complexes was used to study the gas-phase reactivity of the metal anion. Measurements are consistent with a relatively weak Cr-C bond in CrCO/sup -/ which reflects the inherent stability of the 3d/sup 5/4s/sup 2/ Cr/sup -/ fragment. Also, the chromium atom is relatively weakly bound in Cr/sub 2/(CO)/sub 5//sup -/ as shown by the loss of the metal ion from the complex when subjected to low-energy CID excitation. A Cr-H bond energy of 41.8 +- kcal mol/sup -1/ was calculated from the literature reported electron affinity of Cr(1.5 +- 0.2 kcal mol/sup -1/), ionization potential of hydrogen (313.6 kcal mol/sup -1/), and the authors' assigned proton affinity of Cr (340 +- 3 kcal mol/sup -1/). 2 figures, 1 table.
- Research Organization:
- Purdue Univ., West Lafayette, IN
- OSTI ID:
- 5580474
- Journal Information:
- J. Am. Chem. Soc.; (United States), Journal Name: J. Am. Chem. Soc.; (United States) Vol. 105:20; ISSN JACSA
- Country of Publication:
- United States
- Language:
- English
Similar Records
Bond strengths in first-row-metal carbonyl anions
Theoretical study of the dissociation of a single carbonyl from chromium hexacarbonyl
Activation of alkanes by Cr{sup +}: Unique reactivity of ground-state Cr{sup +}({sup 6}S) and thermochemistry of neutral and ionic chromium-carbon bonds
Journal Article
·
Tue Dec 14 23:00:00 EST 1993
· Journal of the American Chemical Society; (United States)
·
OSTI ID:7301880
Theoretical study of the dissociation of a single carbonyl from chromium hexacarbonyl
Journal Article
·
Tue Jan 04 23:00:00 EST 1983
· Inorg. Chem.; (United States)
·
OSTI ID:6235542
Activation of alkanes by Cr{sup +}: Unique reactivity of ground-state Cr{sup +}({sup 6}S) and thermochemistry of neutral and ionic chromium-carbon bonds
Journal Article
·
Tue Mar 10 23:00:00 EST 1992
· Journal of the American Chemical Society
·
OSTI ID:232273
Related Subjects
38 RADIATION CHEMISTRY, RADIOCHEMISTRY, AND NUCLEAR CHEMISTRY
400600* -- Radiation Chemistry
AFFINITY
ANIONS
BEAMS
BREMSSTRAHLUNG
CARBONYLS
CHARGED PARTICLES
CHEMICAL RADIATION EFFECTS
CHEMICAL REACTIONS
CHEMISTRY
CHROMIUM
CHROMIUM COMPLEXES
COMPLEXES
CYCLOTRON RADIATION
DECOMPOSITION
DISSOCIATION ENERGY
ELECTROMAGNETIC RADIATION
ELECTRON BEAMS
ELEMENTS
ENERGY
ENERGY-LEVEL TRANSITIONS
EXCITATION
FLUIDS
FOURIER TRANSFORM SPECTROMETERS
GASES
HYDROGEN
IONIZATION
IONIZATION POTENTIAL
IONS
LEPTON BEAMS
MASS SPECTRA
MEASURING INSTRUMENTS
METALS
NONMETALS
PARTICLE BEAMS
PRESSURE DEPENDENCE
RADIATION CHEMISTRY
RADIATION EFFECTS
RADIATIONS
RADIOLYSIS
SPECTRA
SPECTROMETERS
TRANSITION ELEMENT COMPLEXES
TRANSITION ELEMENTS
ULTRAHIGH VACUUM
400600* -- Radiation Chemistry
AFFINITY
ANIONS
BEAMS
BREMSSTRAHLUNG
CARBONYLS
CHARGED PARTICLES
CHEMICAL RADIATION EFFECTS
CHEMICAL REACTIONS
CHEMISTRY
CHROMIUM
CHROMIUM COMPLEXES
COMPLEXES
CYCLOTRON RADIATION
DECOMPOSITION
DISSOCIATION ENERGY
ELECTROMAGNETIC RADIATION
ELECTRON BEAMS
ELEMENTS
ENERGY
ENERGY-LEVEL TRANSITIONS
EXCITATION
FLUIDS
FOURIER TRANSFORM SPECTROMETERS
GASES
HYDROGEN
IONIZATION
IONIZATION POTENTIAL
IONS
LEPTON BEAMS
MASS SPECTRA
MEASURING INSTRUMENTS
METALS
NONMETALS
PARTICLE BEAMS
PRESSURE DEPENDENCE
RADIATION CHEMISTRY
RADIATION EFFECTS
RADIATIONS
RADIOLYSIS
SPECTRA
SPECTROMETERS
TRANSITION ELEMENT COMPLEXES
TRANSITION ELEMENTS
ULTRAHIGH VACUUM