  Ab-initio calculations reveal that all-metal antiaromatic molecules like
Al4M4 (M=Li, Na and K) can be stabilized in half-sandwich complex:
(Al4M4)Fe(CO)3 and full-sandwich complexes of the type: (Al4M4)2Ni. The
formation of the full-sandwich complex [(Al4M4)2Ni] from its organometallic
precursor depends on the stability of the organic-inorganic hybrid (C4H4) Ni
(Al4Li4).
