A chloride anion forms a chloroform aggregate that increases their size
What is it about?
An ionic compound crystallizes better if both ions have a similar size. In this work we have found a way of increasing the size of an anion. This is by formation of aggregates with the solvent by hydrogen bonds. The stabilty of chloroform. Chloride aggregates with different number of solvent molecules have been studied theoretically and a literature survey of these type of aggregates have been made
Why is it important?
In the crystallization of a ruthenium(II) complex, it was found that the chloride counteranion was solvated by four CHCl3 molecules through hydrogen bonds and interacted with the most positive region of the cation. Theoretical calculations allowed the evaluation of the stability of [Cl(CHCl3)n]2 aggregates. A pronounced stability was found for aggregates with n = 6 with an increasing charge transfer from the chloride ion to to the CHCl3 molecules from n = 1 to 6.
The following have contributed to this page: Blanca R. Manzano