Materials Data on Sb7Pd20 by Materials Project
Pd20Sb7 crystallizes in the trigonal R-3 space group. The structure is three-dimensional. there are four inequivalent Pd sites. In the first Pd site, Pd is bonded in a 2-coordinate geometry to six Pd and four equivalent Sb atoms. There are a spread of Pd–Pd bond distances ranging from 2.86–3.06 Å. There are a spread of Pd–Sb bond distances ranging from 2.66–3.16 Å. In the second Pd site, Pd is bonded in a 3-coordinate geometry to seven Pd and three equivalent Sb atoms. There are one shorter (2.76 Å) and three longer (2.95 Å) Pd–Pd bond lengths. All Pd–Sb bond lengths are 2.65 Å. In the third Pd site, Pd is bonded in a 3-coordinate geometry to eight Pd and three Sb atoms. There are a spread of Pd–Pd bond distances ranging from 2.87–2.92 Å. There are a spread of Pd–Sb bond distances ranging from 2.69–2.95 Å. In the fourth Pd site, Pd is bonded in a 4-coordinate geometry to eight Pd and four Sb atoms. Both Pd–Pd bond lengths are 3.07 Å. There are a spread of Pd–Sb bond distances ranging from 2.68–2.86 Å. There are two inequivalent Sb sites. In the first Sb site, Sb is bonded in a cuboctahedral geometry to twelve Pd atoms. In the second Sb site, Sb is bonded in a 10-coordinate geometry to ten Pd atoms.