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Tetrachlorozincate

Chemical compound From Wikipedia, the free encyclopedia

Tetrachlorozincate
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Tetrachlorozincate is an anion with the formula [ZnCl4]2−. 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 [NH4]2[ZnCl4] (ammonium tetrachlorozincate).[1] Zincates are anionic zinc complexes.

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Related to the preparation of Lucas' reagent, tetrachlorozincates are often generated by combining hydrochloric acid and zinc chloride.

A related anion is [Zn2Cl6]2−, in which again Zn(II) adopts a tetrahedral geometry.[2]

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Portion of the crystal structure of the salt hexaacetonitrilenickel(II) tetrachlorozincate ([Ni(CH3CN)6]2+[ZnCl4]2−).[3]
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The structure of [Zn2Cl6]2−.
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