Tetrachlorozincate
{{Chembox
| ImageFile = Tetrachlorozincate X-ray.png
| ImageSize = 100px
|Section1={{Chembox Identifiers
| CASNo = 15201-05-5
| CASNo_Ref = {{Cascite|changed|EPA}}
| ChEBI = 88170
| ChemSpiderID = 55645
| PubChem = 61755
| StdInChI=1S/4ClH.Zn/h4*1H;/q;;;;+2/p-4
| StdInChIKey = PZVVXRYHDITUNJ-UHFFFAOYSA-J
| SMILES = Cl[Zn-2](Cl)(Cl)Cl
}}
|Section2={{Chembox Properties
| Formula = {{chem2|[ZnCl4](2−)}}
| Zn=1|Cl=4
}}
|Section8={{Chembox Related
| OtherAnions = Tetrafluorozincate
| OtherCations = Tetrachlorocuprate
Tetrachloronickelate
}}
}}
Tetrachlorozincate is an anion with the formula {{chem2|[ZnCl4](2−)|auto=1}}. It is a counterion that is often used in conjunction with strong electrophiles. Being dianionic, tetrachlorozincate is not classified as a weakly coordinating anion. On the other hand, being dianionic, tetrachlorozincate facilitates the crystallization of many salts. It has a tetrahedral molecular geometry. A simple example is {{chem2|[NH4]2[ZnCl4]}} (ammonium tetrachlorozincate).{{cite book|author1=F. Wagenknecht|author2=R. Juza|chapter=Ammonium Tetrachlorozincate|title=Handbook of Preparative Inorganic Chemistry, 2nd Ed. |editor=G. Brauer|publisher=Academic Press|year=1963|place=New York, NY|volume=1|page=1072}} Zincates are anionic zinc complexes.
Related to the preparation of Lucas' reagent, tetrachlorozincates are often generated by combining hydrochloric acid and zinc chloride.
A related anion is {{chem2|[Zn2Cl6](2−)}}, in which again Zn(II) adopts a tetrahedral geometry.{{cite journal|title=Two Compounds Containing the Tris(μ-chloro)hexakis(tetrahydrofuran)divanadium(II) Cation. Preparation, Structures, and Spectroscopic Characterization|journal=Inorg. Chem. |author=F. A. Cotton |author2=S.A.Duraj |author3=W.J. Roth |year=1985|volume=24|issue=6 |page=913|doi=10.1021/ic00200a023}}
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