Carbonyl sulfide

prefLabel
  • Carbonyl Sulfide
definition
  • COS, a gas that is very stable and unreactive in the troposphere, but, it is thought, photolyzes to form carbon monoxide, CO, and sulfur, S, in the stratosphere. Through stratospheric chemical reactions, the sulfur atoms are converted to SO2 and H2SO4 which form sulfate aerosol, cloud condensation nuclei, but which eventually settles into the troposphere and reacts to form sulfuric acid, a component in acid rain. The major biospheric sources of COS are thought to be biological. [Analytical Chemistry; v 65; pages 976-982; 1993.] [Atmospheric Chemical Compounds: Sources, Occurrence, and Bioassay; Graedel, Hawkins, Claxton; page 513; 1986; Academic Press; Orlando.]
broader
Abstract from DBPedia
    Carbonyl sulfide is the chemical compound with the linear formula OCS. It is a colorless flammable gas with an unpleasant odor. It is a linear molecule consisting of a carbonyl group double bonded to a sulfur atom. Carbonyl sulfide can be considered to be intermediate between carbon dioxide and carbon disulfide, both of which are valence isoelectronic with it.

    硫化カルボニル(りゅうかカルボニル、英: carbonyl sulfide)は化学式COSで表される無機炭素化合物。常温では無色の気体で、硫化物様の臭気を有する。カルボニル基に硫黄原子が直線状に結合しており、二酸化炭素と二硫化炭素の中間の等電子体であると考えられる。 水分の存在下で、二酸化炭素と硫化水素とに分解する。 この化合物はユーリー-ミラーの実験によりアミノ酸からペプチドを形成する際の触媒となることが認められ、生命の起源に重要な役割を果たしたことが明らかになった。

    (Source: http://dbpedia.org/resource/Carbonyl_sulfide)