Decentralized unpaired electrons and valence bonding in chromium uranium trisulphide
Abstract
Avalence-bond approach using bidirectional orbitals is employed in a discussion of the uranium bonding in CrUS3. The unpaired outermost-bound uranium electron density recently discovered in this new semiconducting material is identified with a dz2 uranium orbital extending through and beyond the uranium valence electrons. The f character employed in bond formation by uranium is estimated to be 20–30%.