Abstract
The thermal and red photochemical reaction of triethylborane and ozone has been explored in argon matrices with infrared detection. Using both twin jet and merged jet deposition, no significant thermal reaction was observed. In contrast, red light irradiation of the twin jet-deposited matrix led to the formation of the novel H5C2BO species, ethyloxoborane. A strong, broad absorption was observed at 1963 cm−1 after irradiation and assigned to the 11B = O stretching mode, with a10B counterpart at 2027 cm−1. Two additional bands of lower intensity were also assigned to C2H5BO. Band assignments for this species were supported by 18O isotopic labeling experiments. Computational studies further supported the band assignments and confirmed that H5C2BO plus butane is the thermodynamically favored reaction pathway. Kinetic considerations for this reaction are also presented.
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