DOE OSTI2020
La2S3O16 crystallizes in the monoclinic P2_1/c space group. The structure is three-dimensional. there are two inequivalent La sites. In the first La site, La is bonded in a 10-coordinate geometry to ten O atoms. There are a spread of La–O bond distances ranging from 2.41–3.18 Å. In the second La site, La is bonded in a 6-coordinate geometry to nine O atoms. There are a spread of La–O bond distances ranging from 2.39–3.10 Å. There are three inequivalent S sites. In the first S site, S is bonded in a tetrahedral geometry to four O atoms. There are a spread of S–O bond distances ranging from 1.47–1.51 Å. In the second S site, S is bonded in a tetrahedral geometry to four O atoms. There are a spread of S–O bond distances ranging from 1.43–1.58 Å. In the third S site, S is bonded in a tetrahedral geometry to four O atoms. There are a spread of S–O bond distances ranging from 1.47–1.52 Å. There are sixteen inequivalent O sites. In the first O site, O is bonded in a distorted single-bond geometry to one La and one S atom. In the second O site, O is bonded in a distorted single-bond geometry to two La and one S atom. In the third O site, O is bonded in a 1-coordinate geometry to two La and one S atom. In the fourth O site, O is bonded in a distorted bent 150 degrees geometry to one La and one S atom. In the fifth O site, O is bonded in a distorted water-like geometry to one La and one S atom. In the sixth O site, O is bonded in a distorted bent 120 degrees geometry to one La and one S atom. In the seventh O site, O is bonded in a distorted bent 150 degrees geometry to two La and one S atom. In the eighth O site, O is bonded in a water-like geometry to one La and one S atom. In the ninth O site, O is bonded in a bent 150 degrees geometry to one La and one S atom. In the tenth O site, O is bonded in a 3-coordinate geometry to two La and one S atom. In the eleventh O site, O is bonded in a single-bond geometry to one S atom. In the twelfth O site, O is bonded in a water-like geometry to one La and one S atom. In the thirteenth O site, O is bonded in a distorted L-shaped geometry to one La and one O atom. The O–O bond length is 1.24 Å. In the fourteenth O site, O is bonded in a distorted single-bond geometry to one La and one O atom. The O–O bond length is 1.23 Å. In the fifteenth O site, O is bonded in a distorted single-bond geometry to one La and one O atom. In the sixteenth O site, O is bonded in a distorted bent 120 degrees geometry to one La and one O atom.