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Homonuclear clusters Xm of heavy group V atoms (X = As, Sb) up to m = 6 have been studied with valence ab initio self consistent field/configuration integration calculations using energy-adjusted pseudopotentials. Several structures have been investigated and results are given for bond lengths (R e), atomization energies (D e) and vertical ionization potentials of the ground states. Comparison with experimental and other theoretical values is made where possible.
Igel-Mann et al. (Sun,) studied this question.