Materials Data on KPu by Materials Project
KPu is alpha Pu-derived structured and crystallizes in the triclinic P-1 space group. The structure is three-dimensional. there are three inequivalent K sites. In the first K site, K is bonded in a 7-coordinate geometry to seven K and two equivalent Pu atoms. There are a spread of K–K bond distances ranging from 3.86–4.76 Å. There are one shorter (4.55 Å) and one longer (4.58 Å) K–Pu bond lengths. In the second K site, K is bonded in a 4-coordinate geometry to four K and four Pu atoms. There are one shorter (3.96 Å) and one longer (4.40 Å) K–K bond lengths. There are a spread of K–Pu bond distances ranging from 3.47–3.84 Å. In the third K site, K is bonded in a 10-coordinate geometry to eight K and two equivalent Pu atoms. The K–K bond length is 4.40 Å. There are one shorter (4.46 Å) and one longer (4.64 Å) K–Pu bond lengths. There are three inequivalent Pu sites. In the first Pu site, Pu is bonded in a 4-coordinate geometry to two equivalent K and three Pu atoms. There are a spread of Pu–Pu bond distances ranging from 2.30–2.38 Å. In the second Pu site, Pu is bonded in a 3-coordinate geometry to five K and two Pu atoms. The Pu–Pu bond length is 2.29 Å. In the third Pu site, Pu is bonded in a 4-coordinate geometry to one K and three Pu atoms. The Pu–Pu bond length is 2.33 Å.