Tetrachlorozincate
Tetrachlorozincate is an anion with the formula 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. The anion is tetrahedral. 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 2−, in which again Zn adopts a tetrahedral geometry.
File:CANZUM10.png|left|thumb|The structure of 2−.
