# [La(η^x-B_x)La]⁻ (x = 7–9): a new class of inverse sandwich complexes > Research article (Chemical Science, 2019) · cited 102× · AI/ML **Wikidata**: [openalex:W2909539490](https://www.wikidata.org/wiki/openalex:W2909539490) **Source**: https://4ort.xyz/entity/la-sup-x-sup-b-sub-x-sub-la-sup-sup-i-x-i-79-a-new-class-of-inverse-sandwich-complexes