The chemistry of scandium is almost completely dominated by the trivalent ion, Sc3+, due to its electron configuration, [Ar] 3d14s2.
Compounds that feature scandium in oxidation states other than +3 are rare but well characterized.
This material adopts a sheet-like structure that exhibits extensive bonding between the scandium(II) centers.
[6] Scandium borides and carbides are non-stoichiometric, as is typical for neighboring elements.
[8][9][10][11] Scandium forms a series of organometallic compounds with cyclopentadienyl ligands (Cp), similar to the behavior of the lanthanides.