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The nomenclature for these molecules is not entirely standardized, and a wide variety of IUPAC-acceptable names are possible. For substances with the −OSOH group, one can use suffixes ‑oxysulfanol (preferred), ‑hydrogen sulfoxylate, or ‑oxysulfenic acid; or prefixes hydroxysulfanyloxy- (preferred) or sulfenooxy-.
The sulfoxylate anion (SO 2− 2) The thiosulfate anion (S 2 O 2− 3) Sodium thiosulfate, a salt containing the thiosulfate anion; S 2 O 2− 2, a reported sulfur oxyanion. However salts containing S 2 O 2− 2 and HS 2 O − 2 are not well characterized; they would be conjugate bases derived from the parent thiosulfurous acid (H 2 S 2 O 2 ...
Sulfurous acid is commonly known to not exist in its free state, and due to this, it is stated in textbooks that it cannot be isolated in the water-free form. [4] However, the molecule has been detected in the gas phase in 1988 by the dissociative ionization of diethyl sulfite. [5]
Attempted isolation of the common salts of bisulfite results in dehydration of the anion with formation of metabisulfite (S 2 O 2− 5), also known as disulfite: 2 HSO − 3 ⇌ S 2 O 2− 5 + H 2 O. Because of this equilibrium, anhydrous sodium and potassium salts of bisulfite cannot be obtained.
The name of the cation (the unmodified element name for monatomic cations) comes first, followed by the name of the anion. [ 100 ] [ 101 ] For example, MgCl 2 is named magnesium chloride , and Na 2 SO 4 is named sodium sulfate ( SO 2−
Sulfur oxoacids are chemical compounds that contain sulfur, oxygen, and hydrogen.The best known and most important industrially used is sulfuric acid.Sulfur has several oxoacids; however, some of these are known only from their salts (these are shown in italics in the table below).
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