Conclusion
Quantum chemical calculations predict that attachment of one electron to
1,2-diBeX-benzene and 1,2-diZnX-benzene derivatives leads to the
formation of a strong 2-center-1-electron bond encompassing the two
metal centres. Topological features of electron density within the realm
of quantum theory of atoms in molecules and electron localization
function also supports the formation of these bonds. One important
aspect of these radical anions is their stability towards electron
detachment. The calculated adiabatic detachment energies of these
radical anions are significantly negative suggesting their stability.
Moreover, the calculated bond dissociation energy values are also
significant.