Diode Laser Spectroscopy of the ν1and ν3Bands of SD+3

Microwave Spectrum of the SD+3Ion: Molecular Structure

“…The upper trace was obtained without a magnetic field, whereas a field of 88 G was applied in recording the lower trace. reported by infrared spectroscopy (14) and predicted by the theoretical study (13) are also shown for comparison. The present molecular constants agree well with those given by infrared spectroscopy and also by the theoretical study.…”

“…Combined with the previously reported rotational constants of SH 3 ϩ , the determined rotational constant was used to derive the molecular structure of SH 3 ϩ . When we finished the preparation of the manuscript for the present study, we noticed that Xia et al (14) reported an infrared diode laser study of the 1 and 3 bands.…”

Millimeter-wave spectroscopy of and its symmetric isotopologues: Determination of the molecular structure of the sulfonium ion

“…IR [16] and microwave [17] studies of SD 3 þ came out almost together in 1998, followed by a paper from this laboratory [18] including the observation of the J = 1 ‹ 0, K = 0 transition of 34 SD 3 þ . As for the molecular structure of the sulfonium ion is concerned, Araki et al [17] estimated the equilibrium (r e ) one from the average (r z ) structures of SH 3 þ and SD 3 þ , while Dore et al [18] used the additional rotational constant B 0 of 34 SD 3 þ to derive the substitution (r s ) structure.…”

“…The procedures employed needed the knowledge of the axial rotational constant C 0 of both parent species; however, C 0 for SD 3 þ was determined at low precision by IR spectroscopy [16], therefore it has been followed the method suggested by Halonen and Mills [32] to derive its value from the rotational constants of the asymmetric species SHD 2 þ . First, the moments of inertia I a z , I b z , I c z , which are corrected for the harmonic part of the contribution of zero-point vibrations (see Section 3.3), were calculated for SHD 2 þ , then the relation…”

Millimeter-wave spectroscopy of deuterated hydrogen sulfide, SH2D+

“…The available IR studies concern the m 1 and m 3 dyad of both SH þ 3 [7] and SD þ 3 [8], and the m 2 fundamental of SH þ 3 [9]. From the spectroscopic studies, an experimental equilibrium structure could not be derived, but rather its estimate from the average structures of SH þ 3 and SD þ 3 [10], and a mass-dependent structure [6].…”