Materials Data on NpGa4 by Materials Project
NpGa4 crystallizes in the orthorhombic Imma space group. The structure is three-dimensional. Np is bonded in a 9-coordinate geometry to thirteen Ga atoms. There are a spread of Np–Ga bond distances ranging from 3.03–3.14 Å. There are three inequivalent Ga sites. In the first Ga site, Ga is bonded in a 10-coordinate geometry to three equivalent Np and seven Ga atoms. There are a spread of Ga–Ga bond distances ranging from 2.61–3.05 Å. In the second Ga site, Ga is bonded in a 12-coordinate geometry to four equivalent Np and eight Ga atoms. There are four shorter (3.06 Å) and two longer (3.14 Å) Ga–Ga bond lengths. In the third Ga site, Ga is bonded in a 3-coordinate geometry to three equivalent Np and ten Ga atoms.
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