Materials Data on La6Co13Sb by Materials Project
La6Co13Sb crystallizes in the tetragonal I4/mcm space group. The structure is three-dimensional. there are two inequivalent La sites. In the first La site, La is bonded in a 5-coordinate geometry to twelve Co and one Sb atom. There are a spread of La–Co bond distances ranging from 2.92–3.25 Å. The La–Sb bond length is 3.47 Å. In the second La site, La is bonded in a 6-coordinate geometry to four Co and two equivalent Sb atoms. There are a spread of La–Co bond distances ranging from 2.89–3.34 Å. Both La–Sb bond lengths are 3.42 Å. There are four inequivalent Co sites. In the first Co site, Co is bonded in a 12-coordinate geometry to three La and nine Co atoms. There are a spread of Co–Co bond distances ranging from 2.39–2.58 Å. In the second Co site, Co is bonded in a 12-coordinate geometry to five La and seven Co atoms. There are a spread of Co–Co bond distances ranging from 2.42–2.60 Å. In the third Co site, Co is bonded to twelve Co atoms to form a mixture of face and corner-sharing CoCo12 cuboctahedra. All Co–Co bond lengths are 2.37 Å. In the fourth Co site, Co is bonded to two equivalent La and ten Co atoms to form a mixture of face and corner-sharing CoLa2Co10 cuboctahedra. There are one shorter (2.52 Å) and two longer (2.55 Å) Co–Co bond lengths. Sb is bonded in a distorted q6 geometry to ten La atoms.