In phase: The title compounds lie in a new region of phase space for such a structure, and have stoichiometries in accord with a classical Zintl phase formulation. The small semiconductor gaps indicated by DFT calculations are also supported by their diamagnetic susceptibilities.
No takes yet. Share an insight, caveat, or question.
Liu et al. (2009) studied this question.
Synapse has enriched 5 related papers. Consider them for comparative context: