Ionic chlorozincate

These chlorozincates must not be confused with the non-ionic compounds which quinoline and aniline bases give with neutral zinc chloride the latter have the formulae [(C,H7N)2ZnClt] and [(C,H7N)tZnCl ] respectively, and both are only slightly soluble in water. 

The composition of the various chlorozincate anions in the Lewis add ionic liquids was determined using potentiometry in an analogous manner to that used by Heerman and D Olislager [109] who measured the potential of the cell... 

Electrodeposition of Zn-containing Alloys from Chlorozincate Ionic Liquids... 

The hydroborylation of terminal alkynes with pinacolborane (PinBH) and RhCl(PPh3)3 or NiCl2(dppe) as catalyst has been studied in a variety of ionic liquids including chloroaluminates and chlorozincates, see Scheme 9.39.111451 In the absence of a catalyst, the reaction between 1-hexyne and PinBH is 100% selective whereas in the presence of a catalyst, faster rates are achieved at the cost of selectivity. 

An example is offered by the room temperature cholinium chlorozincate ionic liquid 22, an efficient catalyst for the protection of carbonyl groups with diols under solvent-free conditions (Strategy C). An equimolar mixture of a diol (1,2- to 1,5-diol) and a carbonyl compound is stirred at room temperature for 10-20 h in the presence of 22. Very high yields of acetals are reported and the catalyst is easily recovered and recycled. A typical reaction is reported in Figure 22. 

Fan M-M, Wang H, Zhang P-B, Ni BQ (2012) Synthesis, characterization and catalysis performance of ionic liquid l-butyl-3-methylimidazolium chlorozincate. Chin J Inorg Chem 28 1333-1337... 

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