ABSTRACT
In this chapter, we have discussed the results of density functional based calculations on the ground state geometries of transition metal oxide (MO n ) clusters (n = 1–5) in neutral as well as anionic forms for M = Ni, Pd, Pt, Co, Re, Ru and V. We noticed that the electron affinity value of these clusters increases remarkably as the successive O atoms are attached to central M atom as a consequence of more positive charge localisation on metal atom. The electron affinities of MO n clusters suggest that they behave as superhalogens with suitable number of O atoms (n). The large electron affinities of MO n superhalogens along with stability of their anions further point toward the synthesis of new class of compounds having unusual oxidising capabilities.
