Re-analysis of the (100), (001), and (020) rotational structure of SO2 on the basis of high resolution FTIR spectra

The A2Π–X2Σ+ system of MgCl has been photographed at high resolution and analyzed for the rotational structure. Analysis of the low-frequency sub-bands of the 0–0, 0–1, and 0–2 bands showed that there is a nonzero Λ doubling in the common vibrational level ν′ = 0, thereby indicating that the A2Π state is regular and not inverted as presumed by earlier workers. Spin-doubling has been seen in the ν = 1 and 2 levels of the X2Σ+ state. Rotational analysis of the high-frequency sub-band has also been done for the 0–0 band.

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High resolution FTIR spectra of AsD3in the 20-1000 cm−1region. The ground, 98,v2= 1 andv4= 1 states

Molecular Physics ◽

10.1080/00268970009483326 ◽

2000 ◽

Vol 98 (9) ◽

pp. 589-604 ◽

Cited By ~ 9

Author(s):

H. BÜRGER ◽

W. JERZEMBECK ◽

H. RULAND ◽

M. WIRTZ

Keyword(s):

High Resolution ◽

Ftir Spectra

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STRUCTURE OF THE BAND SPECTRUM OF THE CuBr MOLECULE: I. ROTATIONAL STRUCTURE OF THE C SYSTEM OF 63Cu81Br

Canadian Journal of Physics ◽

10.1139/p67-227 ◽

1967 ◽

Vol 45 (8) ◽

pp. 2805-2807 ◽

Cited By ~ 7

Author(s):

P. Ramakoteswara Rao ◽

K. V. S. R. Apparao

Keyword(s):

Fine Structure ◽

High Resolution ◽

Structure Analysis ◽

Band System ◽

Rotational Structure ◽

Band Spectrum ◽

Rotational Analysis ◽

Molecular Constants ◽

Fine Structure Analysis

The C band system of 63Cu81Br, lying in the region 3 900–4 600 Å, has been photographed in emission under high resolution and rotational analysis of the (2–0), (1–0), (0–0), (0–1), (0–2), and (1–3) bands carried out. The system is shown to involve a 1Σ(C1Σ)–1Σ(X1Σ) transition. The molecular constants of 63Cu81Br obtained from this fine-structure analysis are as follows:[Formula: see text]

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C2Πr – X2Σ+ transition of AlO

Canadian Journal of Physics ◽

10.1139/p83-172 ◽

1983 ◽

Vol 61 (9) ◽

pp. 1347-1358 ◽

Cited By ~ 13

Author(s):

M. Singh ◽

M. D. Saksena

Keyword(s):

High Resolution ◽

Rotational Structure ◽

Rotational Constants ◽

First Time ◽

Π State

Several bands of the C2Πr – X2Σ+transition of AlO in the region 2800–3400 Å have been photographed at high resolution. A unique and unambiguous analysis of the rotational structure has been done for the first time for the 2–0, 1–0, 2–1, 0–0, 1–1, 0–1, 1–2, and 0–2 bands of this system. Fairly accurate rotational constants Beff and Deff have been determined for the ν = 2, 1, and 0 levels of the C2Πr state. Severe rotational perturbations have been observed in the C2Π, state.Equilibrium rotational constants (in cm−1) of the C2Π, state are Be ≈ 0.6049 and αe ≈ 0.0046.

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Колебательно-вращательный спектр высокого разрешения в районе полос 3ν-=SUB=-4-=/SUB=-, ν-=SUB=-2-=/SUB=-+2ν-=SUB=-4-=/SUB=- и 2ν-=SUB=-2-=/SUB=-+ν-=SUB=-4-=/SUB=- молекулы -=SUP=-72-=/SUP=-GeH-=SUB=-4-=/SUB=-

Оптика и спектроскопия ◽

10.21883/os.2022.03.52160.2775-21 ◽

2022 ◽

Vol 130 (3) ◽

pp. 345

Author(s):

А.В. Кузнецов ◽

Н.И. Распопова ◽

О.В. Громова ◽

Е.С. Бехтерева ◽

М.А. Кошелев ◽

...

Keyword(s):

High Resolution ◽

Quantum Number ◽

Optical Resolution ◽

Rotational Structure ◽

High Resolution Spectrum ◽

Effective Hamiltonian ◽

Rotational Bands ◽

Fitting Procedure ◽

Maximum Value ◽

Line Positions

The high-resolution spectrum of the 72GeH4 molecule was recorded on a Bruker IFS 125HR Fourier spectrometer with an optical resolution of 0.003 cm-1. The line positions were analyzed for ten interacting vibrational-rotational bands 3ν4 (1F2, F1, 2F2), v2+ 2ν4 (1E, F1, F2, 2E) and 2ν2+v4 (1F2, F1, 2F2) in the range 2350-2750 cm-1. As a result of the analysis, 1726 experimental lines were identified with the maximum value of the quantum number Jmax = 17; then used in the fitting procedure with parameters of the effective Hamiltonian. The resulting set of 35 spectroscopic parameters describes the vibrational-rotational structure of the spectrum with drms = 7.5 · 10-4 cm-1.

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The far-infrared spectrum of OCCCS: high-resolution Fourier-transform measurements

Canadian Journal of Physics ◽

10.1139/p90-068 ◽

1990 ◽

Vol 68 (4-5) ◽

pp. 435-448 ◽

Cited By ~ 9

Author(s):

Frank Holland ◽

Manfred Winnewisser ◽

John W. C. Johns

Keyword(s):

Fourier Transform ◽

High Resolution ◽

Far Infrared ◽

Rotational Structure ◽

Bending Vibration ◽

Weak Absorption ◽

Type Molecule ◽

Bending Mode ◽

Band Contour ◽

Good Agreement

High-resolution far-infrared gas phase spectra of the linear cumulene-type molecule tricarbon oxide sulfide, OCCCS, have been measured between 50 and 660 cm−1 using a Bomem Fourier-transform spectrophotometer. Four band systems corresponding to the fundamental vibrations ν4, ν5, ν6, and ν7 were observed. Analysis of the rotational structure of the two fundamental transitions [Formula: see text] and [Formula: see text] yielded the band origins and rotational constants ν4 = 593.640 432 (270) cm−1, ν5 = 544.101 238 (210) cm−1, B4 = 1414.370 33 (36) MHz, and B5 = 1415.186 10 (13) MHz. The very weak absorption of the bending vibration ν6 was observed at lower resolution around 438 cm−1. The band system due to the low-lying CCC bending mode ν7 was found as a weak absorption near 80 cm−1. Despite the high resolution of 0.004 cm−1 (apodized), the rotational structure of this band was not completely resolved. However, the band contour is in good agreement with the expected harmonic character of the bending potential. The ν7 band systems of the three homologous molecules OCCCO, OCCCS, and SCCCS are compared in terms of their vibrational structure.

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