Showing papers by "Bruce S. Ault published in 1978"
165 citations
TL;DR: In this paper, the magnesium-ozone reaction has been studied by condensing the reagents with nitrogen at 14 K. Isotopic substitution with 26Mg, 16,18O3, and 18O3 has identified infrared absorptions due to two different Mg+O−3 species, MgO2 and Mg
Abstract: The magnesium–ozone reaction has been studied by condensing the reagents with nitrogen at 14 K. Isotopic substitution with 26Mg, 16,18O3, and 18O3 has identified infrared absorptions due to two different Mg+O−3 species, MgO2 and MgO. Six isotopic MgO molecules support this infrared detection of MgO which shows a blue matrix shift. Analogous argon matrix reactions produced only Mg+O−3 and two isomeric MgO3 species.
35 citations
TL;DR: In this article, the authors characterized the spectrum of HCo(CO) 4 in a low temperature argon matrix, showing a weak band at 2018 cm −1, but on irradiation this band grows rapidly and additional bands (previously too weak to be readily observable) appear at 2025 and 485 cm − 1.
35 citations
23 citations
TL;DR: In this paper, a systematic search has been carried out for the neutral species FHF and FHCl isolated in argon matrices at 14 K. The synthesis of these species was attempted by the photolysis of F2 in the presence of either HF or HCl, either concurrent with, or after deposition into the low temperature matrix.
Abstract: A systematic search has been carried out for the neutral species FHF and FHCl isolated in argon matrices at 14 K. The synthesis of these species was attempted by the photolysis of F2 in the presence of either HF or HCl, either concurrent with, or after deposition into the low temperature matrix. Infrared spectra of these samples gave no evidence for the formation of a species of the form FHF, while evidence was demonstrated for a weakly bound complex between HF and Cl, but with a very different spectrum and structure than the corresponding FHCl− anion. These results are in general agreement with the detailed theoretical calculations that have been performed on these systems.
17 citations
15 citations
TL;DR: In this paper, a 15 K cold window was used to sample bromoform and its substituted counterparts during simultaneous irradiation from an open microwave discharge of argon and photolysis with the filtered light of a mercury arc selectively destroyed these ions and produced CX 3, CX3 +, and Ar n H + or Ar n D + upon rearrangement with the detached halogen atom.
13 citations
TL;DR: In this paper, three structured photoluminescence systems were obtained in the 12 000 to 16 000 cm−1 range from matrices containing molecular iodine, which contained increasing vibronic intervals.
2 citations
TL;DR: Very strong and weak structured absorptions were observed for Mg2 at 367 and 444 nm, respectively as mentioned in this paper, and a strong structured 648 nm absorption was found for Ca2, and strong structured 710 nm absorption for Sr2.
Abstract: Mg, Ca, and Sr atoms were codeposited with argon and krypton at 10 K for optical absorption investigation of the van der Waals diatomic molecules. Very strong and weak structured absorptions were observed for Mg2 at 367 and 444 nm, respectively. An unstructured 507 nm and a strong structured 648 nm absorption were found for Ca2, and a strong structured 710 nm absorption was observed for Sr2. Intermediate absorptions with intermediate spacings were observed for CaMg, SrMg, and SrCa in mixed‐metal experiments. The strong absorptions are assigned to 1Σ+u(1S+1P) ←1Σ+g(1S+1S) transitions.