Kinetic and photochemical studies of FeC sub 5 H sub 6 sup + in the gas phase
- Purdue Univ., West Lafayette, IN (USA)
Kinetic and photochemical studies were performed on FeC{sub 5}H{sub 6}{sup +}. FeC{sub 5}H{sub 6}{sup +} was prepared by reacting Fe{sup +} with cyclopentene and subsequently with propane to give the cyclopentadienylallyiron ion. D{degree}(Fe{sup +}-cyclopentadiene) was determined by photodissociation threshold measurements to be 55 {plus minus} 5 kcal/mol, which in turn indicates that dehydrogenation of cyclopentene by Fe{sup +} is 33 {plus minus} 5 kcal/mol exothermic. Linear kinetics are observed by collisionally cooling the FeC{sub 5}H{sub 6}{sup +} ions in a high-background pressure of argon and yield a rate constant of 5 {plus minus} 2 {times} 10{sup {minus}10} cm{sup 3}/(molecule {times} s), corresponding to a reaction efficiency of about 0.4. Photodissociation of the cyclopentadienyallyliron ion yields two product ions, FeC{sub 8}H{sub 8}{sup +} and FeC{sub 6}H{sub 6}{sup +}, with the latter pathway, the higher energy process, prevailing when there is no background argon.
- DOE Contract Number:
- FG02-87ER13766
- OSTI ID:
- 6620175
- Journal Information:
- Journal of the American Chemical Society; (USA), Journal Name: Journal of the American Chemical Society; (USA) Vol. 112:13; ISSN 0002-7863; ISSN JACSA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
400201* -- Chemical & Physicochemical Properties
ALKANES
CHEMICAL REACTIONS
DATA
DATA ANALYSIS
DIENES
EXPERIMENTAL DATA
HYDROCARBONS
INFORMATION
IRON COMPOUNDS
KINETICS
LIGANDS
MEASURING INSTRUMENTS
MEASURING METHODS
NUMERICAL DATA
ORGANIC COMPOUNDS
ORGANOMETALLIC COMPOUNDS
PENTADIENES
PHOTOCHEMICAL REACTIONS
POLYENES
PROPANE
TRANSITION ELEMENT COMPOUNDS