Materials Data on Ba2Y7Cl25 by Materials Project
Ba2Y7Cl25 crystallizes in the monoclinic P2_1/c space group. The structure is three-dimensional. Ba2+ is bonded to four Cl1- atoms to form distorted BaCl4 tetrahedra that share corners with four YCl6 octahedra. The corner-sharing octahedra tilt angles range from 28–48°. There are a spread of Ba–Cl bond distances ranging from 2.93–2.99 Å. There are four inequivalent Y3+ sites. In the first Y3+ site, Y3+ is bonded to six Cl1- atoms to form YCl6 octahedra that share corners with three YCl6 octahedra and corners with three equivalent BaCl4 tetrahedra. The corner-sharing octahedra tilt angles range from 10–29°. There are a spread of Y–Cl bond distances ranging from 2.62–2.69 Å. In the second Y3+ site, Y3+ is bonded to six Cl1- atoms to form corner-sharing YCl6 octahedra. The corner-sharing octahedra tilt angles range from 0–15°. There are a spread of Y–Cl bond distances ranging from 2.65–2.69 Å. In the third Y3+ site, Y3+ is bonded to six Cl1- atoms to form corner-sharing YCl6 octahedra. The corner-sharing octahedra tilt angles range from 3–10°. There are a spread of Y–Cl bond distances ranging from 2.62–2.67 Å. In the fourth Y3+ site, Y3+ is bonded to six Cl1- atoms to form YCl6 octahedra that share corners with five YCl6 octahedra and a cornercorner with one BaCl4 tetrahedra. The corner-sharing octahedra tilt angles range from 3–29°. There are a spread of Y–Cl bond distances ranging from 2.61–2.68 Å. There are thirteen inequivalent Cl1- sites. In the first Cl1- site, Cl1- is bonded in a linear geometry to two Y3+ atoms. In the second Cl1- site, Cl1- is bonded in a linear geometry to two equivalent Y3+ atoms. In the third Cl1- site, Cl1- is bonded in a linear geometry to two Y3+ atoms. In the fourth Cl1- site, Cl1- is bonded in a bent 150 degrees geometry to one Ba2+ and one Y3+ atom. In the fifth Cl1- site, Cl1- is bonded in a distorted bent 120 degrees geometry to one Ba2+ and one Y3+ atom. In the sixth Cl1- site, Cl1- is bonded in a bent 150 degrees geometry to one Ba2+ and one Y3+ atom. In the seventh Cl1- site, Cl1- is bonded in a linear geometry to two Y3+ atoms. In the eighth Cl1- site, Cl1- is bonded in a linear geometry to two Y3+ atoms. In the ninth Cl1- site, Cl1- is bonded in a linear geometry to two Y3+ atoms. In the tenth Cl1- site, Cl1- is bonded in a linear geometry to two Y3+ atoms. In the eleventh Cl1- site, Cl1- is bonded in a bent 150 degrees geometry to two Y3+ atoms. In the twelfth Cl1- site, Cl1- is bonded in a bent 150 degrees geometry to one Ba2+ and one Y3+ atom. In the thirteenth Cl1- site, Cl1- is bonded in a bent 150 degrees geometry to two Y3+ atoms.