A laboratory and theoretical study of protonated carbon disulfide, HSCS+

Microdroplet accelerated reaction for high-efficiency carbon disulfide conversion

Carbon disulfide (CS2) negatively impacts male sexual function and sperm quality. We propose an efficient method to convert CS2 into dithiocarbamic acid using electrospray ionization, achieving up to 96.7% conversion. Protonated CS2 intermediates (SCSH+) contribute to capturing CO2 in amine reactions. Moreover, the reaction efficiently converts CS2 from ethanol solution using microbubble bursting. This study lays the groundwork for accurate CS2 detection.

TMC-1, the starless core sulfur factory: Discovery of NCS, HCCS, H2CCS, H2CCCS, and C4S and detection of C5S

We report the detection of the sulfur-bearing species NCS, HCCS, H2CCS, H2CCCS, and C4S for the first time in space. These molecules were found towards TMC-1 through the observation of several lines for each species. We also report the detection of C5S for the first time in a cold cloud through the observation of five lines in the 31-50 GHz range. The derived column densities are N(NCS) = (7.8±0.6)×1011 cm-2, N(HCCS) = (6.8±0.6)×1011 cm-2, N(H2CCS) = (7.8±0.8)×1011 cm-2, N(H2CCCS) = (3.7±0.4)×1011 cm-2, N(C4S) = (3.8±0.4)×1010 cm-2, and N(C5S) = (5.0±1.0)×1010 cm-2. The observed abundance ratio between C3S and C4S is 340, that is to say a factor of approximately one hundred larger than the corresponding value for CCS and C3S. The observational results are compared with a state-of-the-art chemical model, which is only partially successful in reproducing the observed abundances. These detections underline the need to improve chemical networks dealing with S-bearing species.

Infrared spectra of HSCS+, c-HSCS, and HCS2− produced on electron bombardment of CS2 in solid para-hydrogen

We report infrared spectra of HSCS⁺, c-HSCS, HCS₂⁻, and other species produced on electron bombardment of a mixture of CS₂ and para-hydrogen during deposition at 3.2 K.

A perspective on chemistry in transient plasma from broadband rotational spectroscopy

A review of recent experiments demonstrating the high value of broadband rotational spectroscopy applied to analyse molecular products of plasma chemistry.