Inorganic salt copper ammonia

In the case of specific solvation, there s a direct interaction between the solvent and one or more of the ions within the solute. This can be in the form of binding between the solvent molecules with the solute, for example in the case of the inorganic salt copper (11) ammonia complex, [Cu(NHj),]2. ... 

The sequence of consecutive products and also the morphology of the synthesis products can be altered by addition of inorganic salts to the synthesis mixture [36,73]. Addition of LiCl, KCl, RbCl, and MgCl2 retards nuclei formation. However, it accelerates recrystallization to cristobalite, kenyaite, and quartz [76]. According to (DE-OS 31 23 000), the formation of magadiite from silica gel and sodium hydroxide solution is accelerated by copper sulfate and ammonia. Bergk et al. [73] observed that the sulfate anion shortens the incubation period of the magadiite crystallization process much more than nitrate or chloride anions. 

---