| Sumario: | The periodic systems containing planar tetracoordinate silicon (ptSi), SiC silagraphene, nanotubes, and nanoribbons, were predicted by means of density functional theory (DFT) computations. In SiC silagraphene, each silicon atom is bonded by four carbon atoms in a pure plane, representing the first anti-vant Hoff/Lebel species in the Si-containing extended system. SiC nanotubes, rolled up by the SiC silagraphene, exhibit excellent elastic properties. All these ptSicontaining nanomaterials are metallic, regardless of the chirality, tube diameter, or ribbon width. The high stabilities of these systems strongly suggest the feasibility for their experimental realizations.
|
|---|