Materials Data on Sm8CrTe13Cl by Materials Project
Sm8CrTe13Cl crystallizes in the orthorhombic Cmc2_1 space group. The structure is three-dimensional. there are eight inequivalent Sm3+ sites. In the first Sm3+ site, Sm3+ is bonded in a 8-coordinate geometry to eight Te2- atoms. There are a spread of Sm–Te bond distances ranging from 3.17–3.54 Å. In the second Sm3+ site, Sm3+ is bonded in a 8-coordinate geometry to eight Te2- atoms. There are a spread of Sm–Te bond distances ranging from 3.17–3.47 Å. In the third Sm3+ site, Sm3+ is bonded to seven Te2- atoms to form distorted SmTe7 pentagonal bipyramids that share corners with two equivalent CrTe6 octahedra and edges with two equivalent SmTe7 pentagonal bipyramids. The corner-sharing octahedral tilt angles are 48°. There are a spread of Sm–Te bond distances ranging from 3.13–3.23 Å. In the fourth Sm3+ site, Sm3+ is bonded in a 8-coordinate geometry to seven Te2- and one Cl1- atom. There are a spread of Sm–Te bond distances ranging from 3.19–3.37 Å. The Sm–Cl bond length is 3.25 Å. In the fifth Sm3+ site, Sm3+ is bonded in a 2-coordinate geometry to six Te2- and two equivalent Cl1- atoms. There are a spread of Sm–Te bond distances ranging from 3.23–3.38 Å. Both Sm–Cl bond lengths are 2.82 Å. In the sixth Sm3+ site, Sm3+ is bonded in a 8-coordinate geometry to eight Te2- atoms. There are a spread of Sm–Te bond distances ranging from 3.16–3.58 Å. In the seventh Sm3+ site, Sm3+ is bonded in a 8-coordinate geometry to seven Te2- and one Cl1- atom. There are a spread of Sm–Te bond distances ranging from 3.15–3.24 Å. The Sm–Cl bond length is 3.05 Å. In the eighth Sm3+ site, Sm3+ is bonded in a 8-coordinate geometry to eight Te2- atoms. There are a spread of Sm–Te bond distances ranging from 3.17–3.64 Å. Cr3+ is bonded to six Te2- atoms to form CrTe6 octahedra that share corners with two equivalent SmTe7 pentagonal bipyramids and edges with two equivalent CrTe6 octahedra. There are a spread of Cr–Te bond distances ranging from 2.73–2.76 Å. There are thirteen inequivalent Te2- sites. In the first Te2- site, Te2- is bonded in a 5-coordinate geometry to three Sm3+ and two equivalent Cr3+ atoms. In the second Te2- site, Te2- is bonded in a 7-coordinate geometry to five Sm3+ and two equivalent Cl1- atoms. Both Te–Cl bond lengths are 3.56 Å. In the third Te2- site, Te2- is bonded in a 5-coordinate geometry to five Sm3+ atoms. In the fourth Te2- site, Te2- is bonded in a 5-coordinate geometry to five Sm3+ atoms. In the fifth Te2- site, Te2- is bonded to three Sm3+ and two equivalent Cr3+ atoms to form distorted corner-sharing TeSm3Cr2 trigonal bipyramids. In the sixth Te2- site, Te2- is bonded in a 5-coordinate geometry to five Sm3+ atoms. In the seventh Te2- site, Te2- is bonded in a 5-coordinate geometry to five Sm3+ atoms. In the eighth Te2- site, Te2- is bonded in a 5-coordinate geometry to five Sm3+ and two equivalent Cl1- atoms. Both Te–Cl bond lengths are 3.56 Å. In the ninth Te2- site, Te2- is bonded in a 5-coordinate geometry to five Sm3+ atoms. In the tenth Te2- site, Te2- is bonded in a 5-coordinate geometry to five Sm3+ atoms. In the eleventh Te2- site, Te2- is bonded in a 5-coordinate geometry to four Sm3+ and one Cr3+ atom. In the twelfth Te2- site, Te2- is bonded in a 7-coordinate geometry to five Sm3+ and two equivalent Cl1- atoms. Both Te–Cl bond lengths are 3.57 Å. In the thirteenth Te2- site, Te2- is bonded in a 5-coordinate geometry to four Sm3+ and one Cr3+ atom. Cl1- is bonded in a 4-coordinate geometry to four Sm3+ and six Te2- atoms.