Materials Data on Pr8C8Cl5 by Materials Project

Abstract

Pr8C8Cl5 crystallizes in the monoclinic P2_1/c space group. The structure is three-dimensional. there are four inequivalent Pr3+ sites. In the first Pr3+ site, Pr3+ is bonded to five C+2.38- and three Cl1- atoms to form a mixture of distorted face and corner-sharing PrC5Cl3 hexagonal bipyramids. There are a spread of Pr–C bond distances ranging from 2.42–2.80 Å. There are a spread of Pr–Cl bond distances ranging from 2.93–3.24 Å. In the second Pr3+ site, Pr3+ is bonded in a 8-coordinate geometry to five C+2.38- and three Cl1- atoms. There are a spread of Pr–C bond distances ranging from 2.40–3.01 Å. There are a spread of Pr–Cl bond distances ranging from 3.04–3.24 Å. In the third Pr3+ site, Pr3+ is bonded in a 9-coordinate geometry to six C+2.38- and three Cl1- atoms. There are a spread of Pr–C bond distances ranging from 2.60–2.82 Å. There are a spread of Pr–Cl bond distances ranging from 2.98–3.34 Å. In the fourth Pr3+ site, Pr3+ is bonded in a 6-coordinate geometry to four C+2.38- and two Cl1- atoms. There are a spread of Pr–C bond distances ranging from 2.42–2.69 Å. There are one shorter (3.06 Å) and one longer (3.24 Å) Pr–Cl bond lengths. There are four inequivalent C+2.38- sites. In the first C+2.38- site, C+2.38- is bonded in a 6-coordinate geometry to five Pr3+ and one C+2.38- atom. The C–C bond length is 1.34 Å. In the second C+2.38- site, C+2.38- is bonded to five Pr3+ and one C+2.38- atom to form distorted corner-sharing CPr5C octahedra. The corner-sharing octahedral tilt angles are 66°. The C–C bond length is 1.35 Å. In the third C+2.38- site, C+2.38- is bonded in a 6-coordinate geometry to five Pr3+ and one C+2.38- atom. In the fourth C+2.38- site, C+2.38- is bonded in a 6-coordinate geometry to five Pr3+ and one C+2.38- atom. There are three inequivalent Cl1- sites. In the first Cl1- site, Cl1- is bonded in a distorted rectangular see-saw-like geometry to four Pr3+ atoms. In the second Cl1- site, Cl1- is bonded in a 5-coordinate geometry to five Pr3+ atoms. In the third Cl1- site, Cl1- is bonded in a 4-coordinate geometry to four Pr3+ atoms.