I4/mcm 16 0.00000 0.00000 0.00000 1. 0. 0. 0. 1. 0. 0. 0. 1. 1. 0. 1. 0. -1. 0. 0. 0. -1. -1. 0. 0. 0. 1. 1. 0. 0. -1. -1. 0. -1. 0. -1. -1. 0. 0. 1. 0. -1. 0. -1. 0. 0. 0. 0. -1. 0. -1. -1. 1. 0. 0. 0. 0. 1. 0. 1. 0. -1. 0. -1. 0. 0. 1. 0. 1. 1. 1. 0. 1. 0. 0. -1. -1. 0. 0. 0. -1. 0. 0. 0. -1. -1. 0. -1. 0. 1. 0. 0. 0. 1. 1. 0. 0. 0. -1. -1. 0. 0. 1. 1. 0. 1. 0. 1. 1. 0. 0. -1. 0. 1. 0. 1. 0. 0. 0. 0. 1. 0. 1. 1. -1. 0. 0. 0. 0. -1. 0. -1. 0. 1. 0. 1. 0. 0. -1. 0. -1. -1. -1. 0. -1. 0. 0. 1. 0.00000 0.00000 0.00000 0.50000 0.50000 0.00000 0.50000 0.50000 0.00000 0.00000 0.00000 0.00000 0.50000 0.50000 0.00000 0.00000 0.00000 0.00000 0.00000 0.00000 0.00000 0.50000 0.50000 0.00000 0.00000 0.00000 0.00000 0.50000 0.50000 0.00000 0.50000 0.50000 0.00000 0.00000 0.00000 0.00000 0.50000 0.50000 0.00000 0.00000 0.00000 0.00000 0.00000 0.00000 0.00000 0.50000 0.50000 0.00000