6 -25 25 -25 25 -25 25 Si 0.09645535 0.9453783 1.033805 Si 0.3537174 0.7305408 2.827753 Si 0.9097691999999999 2.353277 1.204642 Si 0.03209695 2.73021 2.755149 Si 2.067566 0.358515 1.282199 Si 2.580778 1.703479 2.85822