Nature of the catalytically inactive cobalt hydride formed upon hydrogenation of aromatic substrates. Structure and characterization of the binuclear cobalt hydride ((Pr sup i sub 2 P(CH sub 2 ) sub 3 PPr sup i sub 2 )Co) sub 2 (H)(. mu. minus H) sub 3
Journal Article
·
· Inorganic Chemistry; (United States)
- Univ. of British Columbia, Vancouver, British Columbia (Canada)
- Indiana Univ., Bloomington (United States)
- Max-Planck Inst. fur Kohlenforschung, Ruhr (West Germany)
During the hydrogenation of arenes using the cobalt catalyst precursor (eta{sup 3}{minus}C{sub 3}H{sub 5})Co(dippp) (dippp = 1,3-bis(diisopropylphosphino)propane), a catalytically inactive cobalt hydride was formed. The dark blue hydride complex was isolated and characterized. Paramagnetic behavior was noted for the hydride in solution at 20C; but upon cooling to {minus}95C, the {sup 1}H NMR spectra appears to be that of a diamagnetic compound. The magnetic susceptibility was also noted to decrease to a value of 0.7 mu{sub B} at {minus}95C. Some possible explanations of this magnetic behavior are advanced. 25 refs., 2 figs., 4 tabs.
- OSTI ID:
- 5943439
- Journal Information:
- Inorganic Chemistry; (United States), Vol. 30:10; ISSN 0020-1669
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
AROMATICS
HYDROGENATION
COBALT COMPLEXES
MAGNETIC SUSCEPTIBILITY
PARAMAGNETISM
HYDRIDES
CATALYSIS
CATALYTIC EFFECTS
EXPERIMENTAL DATA
ORGANIC PHOSPHORUS COMPOUNDS
PROPANE
TEMPERATURE EFFECTS
ALKANES
CHEMICAL REACTIONS
COMPLEXES
DATA
HYDROCARBONS
HYDROGEN COMPOUNDS
INFORMATION
MAGNETIC PROPERTIES
MAGNETISM
NUMERICAL DATA
ORGANIC COMPOUNDS
PHYSICAL PROPERTIES
TRANSITION ELEMENT COMPLEXES
400201* - Chemical & Physicochemical Properties
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
AROMATICS
HYDROGENATION
COBALT COMPLEXES
MAGNETIC SUSCEPTIBILITY
PARAMAGNETISM
HYDRIDES
CATALYSIS
CATALYTIC EFFECTS
EXPERIMENTAL DATA
ORGANIC PHOSPHORUS COMPOUNDS
PROPANE
TEMPERATURE EFFECTS
ALKANES
CHEMICAL REACTIONS
COMPLEXES
DATA
HYDROCARBONS
HYDROGEN COMPOUNDS
INFORMATION
MAGNETIC PROPERTIES
MAGNETISM
NUMERICAL DATA
ORGANIC COMPOUNDS
PHYSICAL PROPERTIES
TRANSITION ELEMENT COMPLEXES
400201* - Chemical & Physicochemical Properties