Cernicharo, J.; Cabezas, C.; Agundez, M.; Tercero, B.; Pardo, J. R.; Marcelino, N.; Gallego, J. D.; Tercero, F.; Lopez-Perez, J. A.; de Vicente, P. published the artcile< TMC-1, the starless core sulfur factory: discovery of NCS, HCCS, H2CCS, H2CCCS, and C4S and detection of C5S>, Category: chlorides-buliding-blocks, the main research area is chlorosuccinimide thioketene sulfur Taurus Mol cloud; Astrochemistry; ISM: individual (TMC-1); ISM: molecules; line: identification; molecular data.
We report the detection of the sulfur-bearing species NCS, HCCS, H2CCS, H2CCCS, and C4S for the first time in space. These mols. 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) x 1011 cm-2, N(HCCS) = (6.8 ± 0.6) x 1011 cm-2, N(H2CCS) = (7.8 ± 0.8) x 1011 cm-2, N(H2CCCS) = (3.7 ± 0.4) x 1011 cm-2, N(C4S) = (3.8 ± 0.4) x 1010 cm-2, and N(C5S) = (5.0 ± 1.0) x 1010 cm-2. The observed abundance ratio between C3S and C4S is 340, that is to say a factor of approx. one hundred larger than the corresponding value for CCS and C3S. The observational results are compared with a state-of-the-art chem. model, which is only partially successful in reproducing the observed abundances. These detections underline the need to improve chem. networks dealing with S-bearing species.
Astronomy & Astrophysics published new progress about Clouds (Taurus Mol.). 128-09-6 belongs to class chlorides-buliding-blocks, and the molecular formula is C4H4ClNO2, Category: chlorides-buliding-blocks.
Referemce:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics