An interesting carbon structure is cubane (C8H8) . This molecule is a cube formed by carbons and sp3 bonds saturated with hydrogens. The fact that the bonding angle is 90°, rather than the ideal 109.5° value found in diamond, gives to this structure rather unusual properties. Here we report an electronic and structural characterization of polycubane chains linked with C2 , N2 , NO, and NS, and show that the electronic properties can be modified to obtain oligomeric chains with insulating, semiconducting and metallic behavior.