Si 1.0000000000000000 0.0000000000000000 2.7152488827686398 2.7152488827686398 2.7152488827686398 0.0000000000000000 2.7152488827686398 2.7152488827686398 2.7152488827686398 0.0000000000000000 Si 2 Cartesian 0.6788122206921600 0.6788122206921600 0.6788122206921600 4.7516855448451194 4.7516855448451194 4.7516855448451194