Near infrared laser spectroscopy of ScI: The C1Σ+–X1Σ+ transition

Liao, Zhenwu; Xia, Y.; Chan, Mei‐Yee; Cheung, Any

doi:10.1016/j.cplett.2013.03.058

Cited by 3 publications

(2 citation statements)

References 13 publications

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“…We consider the chemiluminescent emission characterizing 16 reactions of the group 3 metals Sc, Y, and La and their dimers with F 2 , ClF, and Cl 2 as well as SF 6 ; Sc with Br 2 and ICl; Y with Br 2 and IBr; and Sc 2 and Y 2 with Cl and Br atoms. The available spectroscopic data from experiments ,,,,− ,− and calculations ,,− ,− ,− ,− are given in Tables – .…”

Section: Resultsmentioning

confidence: 99%

Observation of Selectively Populated Monohalide Excited States from the Reactions of Group 3 Metal (Sc, Y, and La) Monomers and Dimers with Halogen-Containing Molecules

et al. 2022

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The chemiluminescent reactions of the group 3 metals Sc and Y with F 2 , Cl 2 , Br 2 , ClF, ICl (Sc), IBr (Y), and SF 6 and La with F 2 , SF 6 , Cl 2 , and ClF have been studied at low pressures (6 × 10 −6 to 4 × 10 −4 Torr) using a beam-gas arrangement and extended to the 10 −3 Torr multiple collision pressure range. Contrary to previous reports, the observed chemiluminescent spectra are primarily attributed to emission from the metal monohalides. Extensive pressure and temperature dependence studies and high-level correlated molecular orbital theory calculations of the bond dissociation energies support this conclusion and the attribution of the chemiluminescence. Evidence for the "selective" production of a monohalide excited electronic state is obtained for several of the Sc and Y reactions. All reactions producing the metal monofluorides are first order with respect to the oxidant, while reactions producing the monochlorides and monobromides are found to be "faster than first order" with respect to the oxidant. This difference is associated with the metal halide bond dissociation energies and the metal halide product internal density of states. Analysis of the temperature dependence for six representative reactions indicates that the "selective" excited-state formation of the metal monohalides proceeds via a direct mechanism with negligible activation energy. We compare and contrast the present results with previous experiments and interpretations which have assigned the selective emission from these systems to the group 3 dihalides produced in a two-step reaction sequence analogous to an electron jump process. The current results suggest a distinctly different interpretation of the observed processes in these systems. The observed selectivity observed in these studies is remarkable given the significant number of known and potential excited states in the scandium and yttrium halides as well as their different electronic configurations.

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Section: Resultsmentioning

confidence: 99%

Observation of Selectively Populated Monohalide Excited States from the Reactions of Group 3 Metal (Sc, Y, and La) Monomers and Dimers with Halogen-Containing Molecules

et al. 2022

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“…The scandium monoiodide molecule is of particular interest because they can be used as prototype for understanding chemical bonding involving d electron. The vibrational and rotational spectra have received much attention [46][47][48][49]. A successful empirical potential function should reproduce the experimental Rydberg-Klein-Rees (RKR) [50][51][52] potential, and satisfy the Lippincott criterion, i.e., an average absolute deviation of less than 1 % of the dissociation energy, D e [30].…”

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confidence: 99%

D-dimensional energies for scandium monoiodide

Guo

Jia

2014

J Math Chem

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We solve the Schrödinger equation with the Morse potential energy model in D spatial dimensions. The bound state rotation-vibrational energy spectra have been obtained by using the supersymmetric shape invariance approach. For a fixed vibrational quantum number and various rotational quantum numbers, the energies for the X 1 + state of ScI molecule increase as D increases. We observe that the behavior of the vibrational energies in higher dimensions remains similar to that of the three-dimensional system. The dimensional scaling method resembles a translation transformation from the higher dimensions to the actual three dimensions.

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Solutions of the Klein–Gordon equation with the Morse potential energy model in higher spatial dimensions

Xie

Jia

2015

Phys. Scr.

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We solve the Klein-Gordon equation with the Morse potential energy model to obtain the relativistic bound state energy equation in D spatial dimensions. We find that the interdimensional degeneracy symmetry exists for the molecular system represented by the Morse potential model. For a fixed vibrational quantum number and various rotational quantum numbers, the relativistic energies for the X 1 Σ + state of the ScI molecule diverge as D increases. We observe that the behavior of the relativistic vibrational energies in higher dimensions remains similar to that of the three-dimensional system.

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Near infrared laser spectroscopy of ScI: The C1Σ+–X1Σ+ transition

Cited by 3 publications

References 13 publications

Observation of Selectively Populated Monohalide Excited States from the Reactions of Group 3 Metal (Sc, Y, and La) Monomers and Dimers with Halogen-Containing Molecules

Observation of Selectively Populated Monohalide Excited States from the Reactions of Group 3 Metal (Sc, Y, and La) Monomers and Dimers with Halogen-Containing Molecules

D-dimensional energies for scandium monoiodide

Solutions of the Klein–Gordon equation with the Morse potential energy model in higher spatial dimensions

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