Before any structural transformations related to molecular inorganics, the standard preprocessing that includes ammonium salt normalization and ring system detection is conducted. Ammonium normalization makes sure ionic motifs and formal charges are consistent whereas ring system detection takes care of the fact that the cyclic metal neighbourhood is preserved and not disconnected. These checks help in performing core coordination based transformations on the standardized molecular structure.
See also https://jschrier.github.io/blog/2023/10/19/Cheminformatics-SMILES-and-InChI-quirks-for-salts.html
See also https://jschrier.github.io/blog/2023/10/19/Cheminformatics-SMILES-and-InChI-quirks-for-salts.html