H232S : First Observation of the (70±,0) Local Mode Pair and Updated Global Effective Vibrational Hamiltonian

On the study of high-resolution rovibrational spectrum of H2S in the region of 7300–7900cm−1

“…Highly excited stretching local mode states v ¼ 4, 4.5, 5, 6, 7 were considered in [12][13][14][15][16][17][18]. Moreover, the band centers of some additional infrared bands were discussed in [18]. The experimental results were reproduced well by quantum mechanics calculations on the structure of the rotation-vibration energy levels (see, for example, [19][20][21][22]).…”

“…Both the local mode properties, and the conditions of their destruction can be analyzed in the rovibrational spectra of H 2 S. As a consequence, numerous spectroscopic studies have been carried out on this molecule (see, for example, [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18]), beginning at the low frequency microwave region [1], up to visible transitions in the highly excited stretching bands ð70 AE ; 0Þ observed by the sensitive intra-cavity laser absorption spectroscopy, [18]. The ground vibrational state was analyzed in [1][2][3][4][5].…”

“…The lowest five poliads of interacting vibrational states, with v ¼ v 1 þ v 2 =2 þ v 3 , v ¼ 0:5, 1, 1.5, 2, 2.5, were discussed in [6][7][8][9][10][11], respectively. Highly excited stretching local mode states v ¼ 4, 4.5, 5, 6, 7 were considered in [12][13][14][15][16][17][18]. Moreover, the band centers of some additional infrared bands were discussed in [18].…”

On the determination of the intramolecular potential energy surface of polyatomic molecules: Hydrogen sulfide and formaldehyde as an illustration

“…From Refs. [53][54][55][56][57][58][59][60][61][62][63][64][65][66][67], we used 88 band centers of the three isotopic species as initial experimental data. Obtained from the fit is a set of 16 parameters of the potential function from Eq.…”

High-resolution rotational analysis of HDS: 2ν3, ν2+2ν3, 3ν3, and ν2+3ν3 bands

“…In the last few decades, the absorption spectra of H 2 S have been studied extensively, with microwave [2][3][4][5][6], Fourier-transform infra-red [7][8][9][10][11][12][13], and intracavity laser absorption spectroscopy at near-IR and visible region [14][15][16][17][18][19][20][21]. But for the deuterated sample, there are just a few bands were studied with high-resolution.…”