Formation of C_mS_n compounds by photopolymerization of CS₂ in the atmosphere of Jupiter

Abstract

Abstract-Toluene extracts from two (CS,), photopolymers were examined with high-performance liquid chromatography (HPLC), matrix-assisted laser desorption ionization time-of-flight (MALDI-TOF) mass spectrometry, particle-induced x-ray emission (PIXE), and 12C(d,p)13C nuclear microprobing. The extracts contained elemental S and at least from 17 to 20 distinct C,S, compounds with M/Z less than -500 amu. Whereas H2S is the dominant S-bearing compound of the normal jovian atmosphere, elemental S, CS, and CS2 were observed at Shoemaker-Levy 9 cometary impact sites and at altitudes of the transiently disturbed jovian atmosphere where photodissociation and photopolymerization occur. It is uncertain whether the CS2 molecular densities were sufficiently large for both to occur, but photopolymerization could have occurred during larger impacts of Jupiter's history. Because the known stable C,S, compounds are yellow, orange and deep red, they could contribute significantly to the colors of the jovian clouds.

Detection of Metastable Atoms and Molecules using Rare Gas Matrices

“…4 has been set to 8.1 eV based on the discussion above. Apart from OCS we have applied these techniques (Kedzierski, 2002) to study the production of S( 1 S) from CS 2 , a molecule of considerable astrophysical and industrial interest (see, e.g., Barber and Yarbrough, 1995;Cosmovici et al, 1982;Heyman et al, 2000;Jackson et al, 1982;Noll et al, 1995;Petherbridge et al, 2002;Vardya and Tarafdar, 1987). 26 has been established using the same method as was applied to N 2 O breakup by LeClair and McConkey (1993) (see Section 4.1).…”

UV Laser Chemical Vapor Deposition of Nano‐Chained Copolymer from Carbon Disulfide and Ethene

“…The structural units identified from the XP and IR spectra are in keeping with a mechanism proposed earlier. [14] This involves reactions of CS 2 into previously invoked [7] intermediate (CS 2 ) n species (n ¼ 2, 3) that react with ethene molecule to form S-CH 2 -CH 2 -S links (Scheme 1).…”

“…A polymer similar to Bridgman's carbon disulfide [1] was obtained through irradiations resonant with the 280-390 nm band allowing formation and polymerization of excited CS 2 molecule, CS, S 2 and CS species. [2][3][4][5][6][7][8] A (CS) x polymer containing S-centered radicals and >C S, >C C<, S 2 C CS 2 , -C-(C S)-S-, -S-(C S)-S-and C-S-S-C configurations was prepared by laser irradiations into the 230-190 nm band, which allowed dissociation of CS 2 into CS and S (e.g., ref. [9,10] ) and chemical vapor deposition of (CS) x polymer [11] through polymerization of the transient CS radical.…”

Concerning the chemical structure of the dicyanogen photopolymer and its presence in certain bodies of the Solar system. Implications on the synthesis of some prebiotic molecules

“…However, Khare et al (1994) have shown that the aerosol colour in these bodies cannot derive exclusively from HCN polymers. As we had occasion to discuss several times (Cataldo 1994(Cataldo , 1996(Cataldo , 1998, 2001Heymann et al 2000), it is highly probable that the colour of these bodies cannot be a result of the photo-or radiopolymerization of a single species but to the simultaneous and random polymerization of a plethora of molecules (Cataldo 1998), including acetylene (Cataldo 1994), ethylene (Cataldo 1996), carbon monosulphide , 2001Heymann et al 2000) and many other compounds, yielding copolymers.…”