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Microwave Spectrum of the SD+3Ion: Molecular Structure

✍ Scribed by Mitsunori Araki; Hiroyuki Ozeki; Shuji Saito

Publisher: Elsevier Science
Year: 1998
Tongue: English
Weight: 85 KB
Volume: 192
Category: Article
ISSN: 0022-2852
DOI: 10.1006/jmsp.1998.7691

No coin nor oath required. For personal study only.

✦ Synopsis

The J ϭ 1-0 to 4 -3 spectral lines of SD 3 ϩ were measured in the 152-610 GHz region using a source-modulated microwave spectrometer. The SD 3 ϩ ion was generated in a free space absorption cell by a hollow-cathode discharge in a gas mixture of D 2 S and D 2 . The rotational constant B 0 and the centrifugal distortion constants D J and D JK were determined from the measured frequencies. A vibration-rotation analysis was carried out and the r z structures of SH 3 ϩ and SD 3 ϩ were derived from their zero point averaged rotational constants, expressed as SH 3 ϩ : r z ϭ 1.36512( 22) Å and z ϭ 94.098(26)°, and SD 3 ϩ : r z ϭ 1.36086( 16) Å and z ϭ 94.1211(195)°, where the difference between z (HSH) and z (DSD) was assumed to be the same as that between z (HPH) of PH 3 and z (DPD) of PD 3 . From the shift between the r z structures of SH 3 ϩ and SD 3 ϩ , the r e structure of SH 3 ϩ was estimated to be r e ϭ 1.35001(113) Å, e ϭ 94.181(135)°.

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