8 Lattice=" 5.42386 0 0 -0.00583756 5.42008 0 0.133978 0.025245 5.31918 " Si -0.0601366 -0.000139309 -0.0552929 Si 1.41186 1.40158 1.29827 Si 0.0312084 2.71899 2.71348 Si 1.40738 4.08238 4.03102 Si 2.73873 -0.00499376 2.66143 Si 4.093 1.3473 4.02214 Si 2.75009 2.74892 -0.009230850000000001 Si 4.15824 4.1992 1.24093