DOE OSTI2020
Sm6Br13 crystallizes in the triclinic P1 space group. The structure is three-dimensional. there are twelve inequivalent Sm+2.17+ sites. In the first Sm+2.17+ site, Sm+2.17+ is bonded to seven Br1- atoms to form a mixture of distorted corner and edge-sharing SmBr7 pentagonal bipyramids. There are a spread of Sm–Br bond distances ranging from 2.87–3.32 Å. In the second Sm+2.17+ site, Sm+2.17+ is bonded to seven Br1- atoms to form a mixture of distorted corner and edge-sharing SmBr7 pentagonal bipyramids. There are a spread of Sm–Br bond distances ranging from 2.90–3.18 Å. In the third Sm+2.17+ site, Sm+2.17+ is bonded in a 8-coordinate geometry to eight Br1- atoms. There are a spread of Sm–Br bond distances ranging from 2.93–3.17 Å. In the fourth Sm+2.17+ site, Sm+2.17+ is bonded in a 8-coordinate geometry to eight Br1- atoms. There are a spread of Sm–Br bond distances ranging from 2.93–3.16 Å. In the fifth Sm+2.17+ site, Sm+2.17+ is bonded to seven Br1- atoms to form a mixture of distorted corner and edge-sharing SmBr7 pentagonal bipyramids. There are a spread of Sm–Br bond distances ranging from 2.86–3.32 Å. In the sixth Sm+2.17+ site, Sm+2.17+ is bonded in a 8-coordinate geometry to eight Br1- atoms. There are a spread of Sm–Br bond distances ranging from 2.93–3.16 Å. In the seventh Sm+2.17+ site, Sm+2.17+ is bonded to seven Br1- atoms to form a mixture of distorted corner and edge-sharing SmBr7 pentagonal bipyramids. There are a spread of Sm–Br bond distances ranging from 2.87–3.30 Å. In the eighth Sm+2.17+ site, Sm+2.17+ is bonded to seven Br1- atoms to form a mixture of distorted corner and edge-sharing SmBr7 pentagonal bipyramids. There are a spread of Sm–Br bond distances ranging from 2.91–3.19 Å. In the ninth Sm+2.17+ site, Sm+2.17+ is bonded to seven Br1- atoms to form a mixture of distorted corner and edge-sharing SmBr7 pentagonal bipyramids. There are a spread of Sm–Br bond distances ranging from 2.91–3.18 Å. In the tenth Sm+2.17+ site, Sm+2.17+ is bonded to seven Br1- atoms to form a mixture of distorted corner and edge-sharing SmBr7 pentagonal bipyramids. There are a spread of Sm–Br bond distances ranging from 2.91–3.18 Å. In the eleventh Sm+2.17+ site, Sm+2.17+ is bonded to seven Br1- atoms to form a mixture of distorted corner and edge-sharing SmBr7 pentagonal bipyramids. There are a spread of Sm–Br bond distances ranging from 2.86–3.32 Å. In the twelfth Sm+2.17+ site, Sm+2.17+ is bonded in a 8-coordinate geometry to eight Br1- atoms. There are a spread of Sm–Br bond distances ranging from 2.93–3.17 Å. There are twenty-six inequivalent Br1- sites. In the first Br1- site, Br1- is bonded to four Sm+2.17+ atoms to form a mixture of distorted corner and edge-sharing BrSm4 tetrahedra. In the second Br1- site, Br1- is bonded in a distorted trigonal non-coplanar geometry to three Sm+2.17+ atoms. In the third Br1- site, Br1- is bonded in a distorted trigonal non-coplanar geometry to three Sm+2.17+ atoms. In the fourth Br1- site, Br1- is bonded to four Sm+2.17+ atoms to form a mixture of distorted corner and edge-sharing BrSm4 tetrahedra. In the fifth Br1- site, Br1- is bonded in a distorted trigonal planar geometry to three Sm+2.17+ atoms. In the sixth Br1- site, Br1- is bonded in a 3-coordinate geometry to three Sm+2.17+ atoms. In the seventh Br1- site, Br1- is bonded in a 3-coordinate geometry to three Sm+2.17+ atoms. In the eighth Br1- site, Br1- is bonded in a distorted trigonal planar geometry to three Sm+2.17+ atoms. In the ninth Br1- site, Br1- is bonded in a 4-coordinate geometry to four Sm+2.17+ atoms. In the tenth Br1- site, Br1- is bonded in a 3-coordinate geometry to three Sm+2.17+ atoms. In the eleventh Br1- site, Br1- is bonded to four Sm+2.17+ atoms to form a mixture of distorted corner and edge-sharing BrSm4 tetrahedra. In the twelfth Br1- site, Br1- is bonded in a 4-coordinate geometry to four Sm+2.17+ atoms. In the thirteenth Br1- site, Br1- is bonded in a 3-coordinate geometry to three Sm+2.17+ atoms. In the fourteenth Br1- site, Br1- is bonded to four Sm+2.17+ atoms to form a mixture of distorted corner and edge-sharing BrSm4 tetrahedra. In the fifteenth Br1- site, Br1- is bonded in a 4-coordinate geometry to four Sm+2.17+ atoms. In the sixteenth Br1- site, Br1- is bonded to four Sm+2.17+ atoms to form a mixture of distorted corner and edge-sharing BrSm4 tetrahedra. In the seventeenth Br1- site, Br1- is bonded in a 3-coordinate geometry to three Sm+2.17+ atoms. In the eighteenth Br1- site, Br1- is bonded in a distorted trigonal non-coplanar geometry to three Sm+2.17+ atoms. In the nineteenth Br1- site, Br1- is bonded in a distorted trigonal planar geometry to three Sm+2.17+ atoms. In the twentieth Br1- site, Br1- is bonded in a 4-coordinate geometry to four Sm+2.17+ atoms. In the twenty-first Br1- site, Br1- is bonded in a 3-coordinate geometry to three Sm+2.17+ atoms. In the twenty-second Br1- site, Br1- is bonded in a 3-coordinate geometry to three Sm+2.17+ atoms. In the twenty-third Br1- site, Br1- is bonded in a 3-coordinate geometry to three Sm+2.17+ atoms. In the twenty-fourth Br1- site, Br1- is bonded in a distorted trigonal planar geometry to three Sm+2.17+ atoms. In the twenty-fifth Br1- site, Br1- is bonded in a distorted trigonal non-coplanar geometry to three Sm+2.17+ atoms. In the twenty-sixth Br1- site, Br1- is bonded to four Sm+2.17+ atoms to form a mixture of distorted corner and edge-sharing BrSm4 tetrahedra.