[Cod-bugs] Optimade API returns empty results for SMILES query, while web interface works properly for the same SMILES value

[Mehmet Giritli - STFC UKRI]

Hi,

We'd like to report an issue we are facing with the COD's Optimade API.

Using a SMILES string to search with COD website interface works fine:

https://www.crystallography.net/cod/search.php
SMILES: c1ccccc1

However, when the same SMILES value is used to query through Optimade API, we get no results back (and no errors either). Here is how we are searching with Optimade:

https://www.crystallography.net/cod/optimade/structures?filter=_cod_smiles=%22c1ccccc1%22

Please let me know if you need any further information.

Kind Regards,
Mehmet.

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