The Blue Obelisk Data Repository lists many important chemoinformatics data such as element and isotope properties, atomic radii, etc. including references to original literature. Developers can use this repository to make their software interoperable.
Blue Obelisk is an informal group of chemists who promote open data, open source, and open standards; it was initiated by Peter Murray-Rust and others in 2005 // Include the Networks: Sourceforge, ThinkGeek, Slashdot, Freecode
re3data.org: Blue Obelisk Data Repository;
editing status 2024-08-13;
re3data.org - Registry of Research Data Repositories. http://doi.org/10.17616/R33W2F
last accessed: 2025-04-23