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[1] [2] [3] Introduced by Gilbert N. Lewis in his 1916 article The Atom and the Molecule, a Lewis structure can be drawn for any covalently bonded molecule, as well as coordination compounds. [4] Lewis structures extend the concept of the electron dot diagram by adding lines between atoms to represent shared pairs in a chemical bond.
The molecule SO 3 is trigonal planar.As predicted by VSEPR theory, its structure belongs to the D 3h point group.The sulfur atom has an oxidation state of +6 and may be assigned a formal charge value as low as 0 (if all three sulfur-oxygen bonds are assumed to be double bonds) or as high as +2 (if the Octet Rule is assumed). [7]
The most common Lewis bases are anions. The strength of Lewis basicity correlates with the pK a of the parent acid: acids with high pK a 's give good Lewis bases. As usual, a weaker acid has a stronger conjugate base. Examples of Lewis bases based on the general definition of electron pair donor include: simple anions, such as H − and F −
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The structure of the tetrathionate anion. The tetrathionate anion, S 4 O 2− 6, is a sulfur oxyanion derived from the compound tetrathionic acid, H 2 S 4 O 6. Two of the sulfur atoms present in the ion are in oxidation state 0 and two are in oxidation state +5. Alternatively, the compound can be viewed as the adduct resulting from the binding ...
Solutions of bisulfite are typically prepared by treatment of sulfur dioxide with aqueous base: [3]. SO 2 + OH − → HSO − 3. HSO − 3 is the conjugate base of sulfurous acid, (H 2 SO 3).
S 4 N 4 is a Lewis base at nitrogen. It binds to strong Lewis acids, such as SbCl 5 and SO 3, or H[BF 4]: S 4 N 4 + SbCl 5 → S 4 N 4 ·SbCl 5 S 4 N 4 + SO 3 → S 4 N 4 ·SO 3 S 4 N 4 + H[BF 4] → [S 4 N 4 H] + [BF 4] −. The cage is distorted in these adducts. [1] S 4 N 4 reacts with metal complexes, but the bonding situation may be quite ...
Sulfur trioxide is the active ingredient in many sulfonation reactions.. Typical conditions involve heating the aromatic compound with sulfuric acid: [2] C 6 H 6 + H 2 SO 4 → C 6 H 5 SO 3 H + H 2 O