Si 1.0000000000000000 0.0000000000000000 2.7167800694083799 2.7167800694083799 2.7167800694083799 0.0000000000000000 2.7167800694083799 2.7167800694083799 2.7167800694083799 0.0000000000000000 Si 2 Cartesian 0.6791950173520949 0.6791950173520949 0.6791950173520950 4.7543651214646649 4.7543651214646649 4.7543651214646658