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Carbon disulfide (also spelled as carbon disulphide) is an inorganic compound with the chemical formula CS 2 and structure S=C=S. It is also considered as the anhydride of thiocarbonic acid . [ 8 ] It is a colorless, flammable, neurotoxic liquid that is used as a building block in organic synthesis.
Carbonyl sulfide was first described in 1841, [21] but was apparently mischaracterized as a mixture of carbon dioxide and hydrogen sulfide. Carl von Than first characterized the substance in 1867. It forms when carbon monoxide reacts with molten sulfur: CO + 1 / 8 S 8 → COS. This reaction reverses above 1200 K (930 °C; 1700 °F).
Structure and properties Index of refraction, n D: ... for Carbon disulfide/Methanol [5] P = 760 mm Hg BP Temp. °C % by mole carbon disulfide liquid vapor 58.8: 1.3:
Expressing resonance when drawing Lewis structures may be done either by drawing each of the possible resonance forms and placing double-headed arrows between them or by using dashed lines to represent the partial bonds (although the latter is a good representation of the resonance hybrid which is not, formally speaking, a Lewis structure).
Later, infrared and Raman spectroscopy showed that the structure is symmetrical with a D ∞h point group symmetry, [3] i.e. S=C=C=C=S. This compound is analogous to carbon suboxide whose structure is O=C=C=C=O. Lengyel first synthesized this compound by passing carbon disulfide (CS 2) vapor through an electric arc with carbon electrodes. This ...
The prototype of a protein disulfide bond is the two-amino-acid peptide cystine, which is composed of two cysteine amino acids joined by a disulfide bond. The structure of a disulfide bond can be described by its χ ss dihedral angle between the C β −S γ −S γ −C β atoms, which is usually close to ±90°.
Trithiocarbonate is prepared by the reaction of sodium hydrosulfide (NaSH) with carbon disulfide: [4] CS 2 + 2 NaSH → Na 2 CS 3 + H 2 S. The relatively elusive trithiocarbonic acid H 2 CS 3 has been characterized by X-ray crystallography. [5] Esters of thiocarbonic acid, such as Dimethyl trithiocarbonate ((CH 3 S) 2 CS) are typically called ...
Carbon sulfide may refer to: Carbon disulfide; Carbon monosulfide; Carbon subsulfide; Sulflower; Cyclohexanehexathione This page was last edited on 16 June ...