# extended Hückel method

> considers also sigma orbitals

**Wikidata**: [Q1117938](https://www.wikidata.org/wiki/Q1117938)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Extended_Hückel_method)  
**Source**: https://4ort.xyz/entity/extended-h-ckel-method


## References

1. Freebase Data Dumps. 2013
2. [OpenAlex](https://docs.openalex.org/download-snapshot/snapshot-data-format)