Reactions of iron atoms with benzene and cyclohexadienes in argon matrices: iron-benzene complexes and photolytic dehydrogenation of cyclohexadiene
Three cyclic C/sub 6/ hydrocarbons-benzene (C/sub 6/H/sub 6/), 1,4-cyclohexadiene, and 1,3-cyclohexadiene (both C/sub 6/H/sub 8/)-were codeposited with iron atoms in argon matrices at 12-14 K.When iron atoms were cocondensed with benzene, infrared spectra showed the formation of Fe(C/sub 6/H/sub 6/), Fe(C/sub 6/H/sub 6/)/sub 2/, and Fe/sub 2/(C/sub 6/H/sub 6/) complexes. When iron atoms were codeposited with 1,4-cyclohexadiene, IR spectra showed the formation of Fe(C/sub 6/H/sub 8/) and Fe/sub 2/(C/sub 6/H/sub 8/) adducts. On photolysis with ultraviolet light the monoiron adduct rearranged to form FeH/sub 2/ and benzene in either isolated or adducted states. A similar dehydrogenation reaction was also thought to be observed upon photolysis of the diiron-cyclohexadiene adduct with visible light. 1,3-cyclohexadiene has been shown to react with iron atoms and dimers in a similar manner. Deuterium isotopic substitution of the three C/sub 6/ hydrocarbons was used to obtain confirmatory evidence.
- Research Organization:
- Rice Univ., Houston, TX
- OSTI ID:
- 7222411
- Journal Information:
- J. Am. Chem. Soc.; (United States), Vol. 108:21
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
BENZENE
CHEMICAL PREPARATION
DEHYDROGENATION
DEPOSITION
PHOTOLYSIS
CYCLOALKENES
DIENES
HEXENES
IRON
IRON COMPLEXES
ADDUCTS
ARGON
DEUTERIUM COMPOUNDS
DIMERS
EXPERIMENTAL DATA
INFRARED SPECTRA
MATRIX ISOLATION
ULTRALOW TEMPERATURE
ALKENES
AROMATICS
CHEMICAL REACTIONS
COMPLEXES
DATA
DECOMPOSITION
ELEMENTS
FLUIDS
GASES
HYDROCARBONS
HYDROGEN COMPOUNDS
INFORMATION
METALS
NONMETALS
NUMERICAL DATA
ORGANIC COMPOUNDS
PHOTOCHEMICAL REACTIONS
POLYENES
RARE GASES
SPECTRA
SYNTHESIS
TRANSITION ELEMENT COMPLEXES
TRANSITION ELEMENTS
400500* - Photochemistry
400201 - Chemical & Physicochemical Properties