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Tin(II) chloride also behaves as a Lewis acid, forming complexes with ligands such as chloride ion, for example: SnCl 2 (aq) + CsCl (aq) → CsSnCl 3 (aq) Most of these complexes are pyramidal, and since complexes such as SnCl − 3 have a full octet, there is little tendency to add more than one ligand.
The following other wikis use this file: Usage on ar.wikipedia.org كلوريد القصدير الثنائي; Usage on es.wikipedia.org Cloruro de estaño(II)
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Solid germanium dichloride can be produced by comproportionation by passing germanium tetrachloride, GeCl 4, over germanium metal at 300 °C and reduced pressure (0.1 mmHg).
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).
The number of electron pairs in the valence shell of a central atom is determined after drawing the Lewis structure of the molecule, and expanding it to show all bonding groups and lone pairs of electrons. [1]: 410–417 In VSEPR theory, a double bond or triple bond is treated as a single bonding group. [1]
Two common modes of Lewis acid catalysis in reactions with polar mechanisms. In reactions with polar mechanisms, Lewis acid catalysis often involves binding of the catalyst to Lewis basic heteroatoms and withdrawing electron density, which in turn facilitates heterolytic bond cleavage (in the case of Friedel-Crafts reaction) or directly activates the substrate toward nucleophilic attack (in ...
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