KINETICS OF THE DEUTERIUM EXCHANGE BETWEEN DIBORANE AND DIMETHYLAMINODIBORANE

Journal Article · Wed Feb 01 04:00:00 EST 1961 · Journal of the American Chemical Society (U.S.)

DOI:https://doi.org/10.1021/ja01464a012· OSTI ID:4084682

Rigden, J S; Koski, W S

The kinetics of the deuterium exchange between diborane and dimethylaminodiborane (DMADB) were studied. The course of the reaction was followed by means of gas density measurements. The concentrations of both reactants were varied over a 20-fold range in order to establish the orders of the reaction. The reaction was found to be first order with respect to DMADB and haif order with respect to diborane. The activation energy was found to be 27.8 plus or minus 3 kcal. By variation of the surface-to-volume ratio it was determined that, to with experimental error, the reaction is homogeneous. A mechanism is proposed in which the ratedetermining step is the reaction between the intermediate BH/sub 3/ and DMADB. The rather high activation energy is consistent with a postulated symmetrical intermediate in the rate-determining step. (auth)

• Research Organization: Johns Hopkins Univ., Baltimore
• Sponsoring Organization: USDOE
• NSA Number: NSA-15-011416
• OSTI ID: 4084682
• Journal Information: Journal of the American Chemical Society (U.S.), Journal Name: Journal of the American Chemical Society (U.S.) Vol. Vol: 83; ISSN JACSA
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

ACTIVATION
BOROHYDRIDES
DENSITY
ENERGY
GASES
ISOTOPE SEPARATION
ISOTOPIC EXCHANGE
MEASURED VALUES
REACTION KINETICS