Bulk PdSe₂ (palladium diselenide) has been predicted to exhivit 30 meV band gap which increases to 1.43 eV indirect gap (theoretical).  In comparison to other TMDCs, PdSe₂ has an uncommon structure: Pd atoms coordinate with four Se atoms, forming a square backbone lattice. It has also been recently shown that PdSe₂ monolayer immediately undergo PdSe₂ to Pd₂Se₃ crystal transformation. Owing to vast amount of Pd atoms, PdSe₂ has been theoretically and experimentally shown to be catalytically active material thoigh fundamental research  still remains at its seminal stages.

Properties of PdSe₂ vdW crystals