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Metal Anions in Metal-Rich Compounds and Polar Intermetallics


  • Dedicated to Professor John D. Corbett on the occasion of his 85th birthday


We briefly surveyed metal-rich and intermetallic compounds containing metal anions that have been characterized by density functional calculations. Transition metal anions come with electron configurations (n+1)s2nd10(n+1)p0, (n+1)s2nd10(n+1)p1, and (n+1)s2nd10(n+1)p2. Their nd orbitals act asreservoirs for holding ten electrons. Thus, these anions exhibit bonding characteristics similar to those found for their main group analogues.