Showing papers by "Bruce S. Ault published in 2019"
TL;DR: In this paper, the light-induced reaction of ozone with 1,3-butadiene in argon matrixes is described, using either red (625) or UV (254) irradiation.
7 citations
TL;DR: The photoreactivity of cyclic vinyl azides 1 and 2, which have five- and six-memebered rings, respectively, was characterized at cryogenic temperature with EPR, IR and UV spectroscopy to support the mechanism for forming vinylnitrenes 31N and 32N and their reactivity.
Abstract: The photoreactivity of cyclic vinyl azides 1 (3-azido-2-methyl-cyclopenten-1-one) and 2 (3-azido-2-methyl-2-cyclohexen-1-one), which have five- and six-membered rings, respectively, was characteriz...
3 citations
TL;DR: Structure 7 is proposed as an intermediate in the chemical vapor deposition (CVD) and atomic layer deposition (ALD) of Ru/RuO2 film forming reactions on substrates at elevated temperatures reported in the literature.
Abstract: The thermal and photochemical reactions of ozone with ruthenocene were studied in argon matrices at 10–15 K by infrared spectroscopy. Irradiation of freshly deposited matrices with near-infrared light (λ = 880 nm) from an LED resulted in new peaks in their infrared spectra that were assigned to three new ruthenocene oxide structures (4, 5, and 6) calculated by the density functional theory. It is proposed that the near-infrared light caused photodissociation of some ozone molecules and subsequent reactions of the atomic oxygen produced with adjacent ruthenocene molecules in the matrix. Structures 4 and 5 contain a Ru=O oxo group resulting from the attack of atomic oxygen on the ruthenium atom, and structure 6 contains a C=O aldehyde group resulting from the attack of atomic oxygen on a ring carbon atom. Subsequent irradiation of the matrix with red light (λ = 625 nm) from an LED resulted in a fourth new structure (7), and it also initiated a reversible photochemical conversion 4 ⇄ 5 + O2, with the forward...
2 citations