Vincent F. Scalfani

**Describe the bug** When using the Coordgen library, the depiction of molecular hydrogen, `[H][H]`, does not display anything. **To Reproduce** ``` from rdkit import Chem from rdkit.Chem.Draw import IPythonConsole from...

Should an empty SMILES string be invalid?

1

See original comments here: https://github.com/IUPAC/IUPAC_SMILES_plus/pull/8

Adjust Formal Grammar to simplify no leading zeros

3

In the current IUPAC SMILES+ draft document, leading zeros are not allowed for atom properties including isotope, H count, charge, atom class, and ring bonds. In an effort to clarify...

This is a follow up of discussion #7489. It affects all versions of RDKit. **Is your feature request related to a problem? Please describe.** The current implementation of reaction fingerprints...