Materials Data on PaCl5 by Materials Project
PaCl5 crystallizes in the monoclinic C2/c space group. The structure is one-dimensional and consists of two PaCl5 ribbons oriented in the (0, 0, 1) direction. Pa5+ is bonded to seven Cl1- atoms to form edge-sharing PaCl7 pentagonal bipyramids. There are a spread of Pa–Cl bond distances ranging from 2.49–2.80 Å. There are three inequivalent Cl1- sites. In the first Cl1- site, Cl1- is bonded in a single-bond geometry to one Pa5+ atom. In the second Cl1- site, Cl1- is bonded in a water-like geometry to two equivalent Pa5+ atoms. In the third Cl1- site, Cl1- is bonded in a single-bond geometry to one Pa5+ atom.
36 MATERIALS SCIENCE↗