Showing papers by "Bruce S. Ault published in 1999"
TL;DR: In this paper, the matrix isolation technique has been employed to investigate the reaction of OVCl3 with CH3OH using twin jet deposition, and the initial intermediate in the mechanism was identified as a weakly bound molecular complex.
Abstract: The matrix isolation technique has been employed to investigate the reaction of OVCl3 with CH3OH. Using twin jet deposition, the initial intermediate in the mechanism was identified as a weakly bound molecular complex. This species is characterized by perturbations to the C−O, VO, and V−Cl stretching modes. Merged jet deposition, with a room-temperature reaction zone, led to complete conversion to Cl2V(O)OCH3, the second intermediate in the reaction sequence, through HCl elimination from the initial complex. This species was identified by use of extensive isotopic labeling, the observation of HCl as an additional reaction product, and by comparison to density functional calculations. All of the fundamental vibrational modes of this species that lie above 400 cm-1 were observed, some with very high intensities. Heating the reaction zone above 150 °C led to destruction of this intermediate, and production of both CH2O and CH3Cl.
29 citations
TL;DR: An ab initio study of the structure, binding energies, electronic distribution, vibrational frequencies, and thermodynamic parameters of possible gas-phase complexes of silicon tetrafluoride with w
Abstract: An ab initio study of the structure, binding energies, electronic distribution, vibrational frequencies, and thermodynamic parameters of possible gas-phase complexes of silicon tetrafluoride with w
23 citations
TL;DR: In this paper, the matrix isolation technique has been employed to isolate and characterize the initial intermediate in the reaction of (CH3)3Al with O2 using a flow gas reactor system immediately prior to matrix deposition, evidence of reaction was noted only when a constricted nozzle was employed.
17 citations
TL;DR: In this paper, the identification and spectroscopic characterization of the 1:1 molecular complex between trimethylindium and ammonia in argon and nitrogen matrices at cryogenic temperatures is reported for the first time.
7 citations
TL;DR: In this article, B2H6 was copyrolyzed at 335°C in separate experiments with C2H2 and C2D4 in a flow reactor followed by trapping into an argon matrix at 14 K. Small but distinct and reproducible yields were observed in these experiments indicating that some hydrogenation is occurring, while no evidence for alkylboranes was obtained.
3 citations
TL;DR: The matrix isolation technique has been used to investigate the initial products of the room and high temperature reaction of trimethylaluminum with methanol and its isotopomers, as well as water, in a flowing reactor system as mentioned in this paper.
2 citations