Cu3P crystallizes in the hexagonal P6_3cm space group. There are four inequivalent Cu sites. In the first Cu site, Cu(1) is bonded in a 2-coordinate geometry to two equivalent P(1) atoms. In the second Cu site, Cu(2) is bonded in a distorted trigonal planar geometry to three equivalent P(1) atoms. In the third Cu site, Cu(3) is bonded in a distorted trigonal non-coplanar geometry to three equivalent P(1) atoms. In the fourth Cu site, Cu(4) is bonded in a 3-coordinate geometry to three equivalent P(1) atoms. P(1) is bonded in a 8-coordinate geometry to one Cu(3), two equivalent Cu(1), two equivalent Cu(2), and three equivalent Cu(4) atoms.
Cu3P crystallizes in the hexagonal P6_3cm space group. There are four inequivalent Cu sites. In the first Cu site, Cu(1) is bonded in a 2-coordinate geometry to two equivalent P(1) atoms. Both Cu(1)-P(1) bond lengths are 2.34 Å. In the second Cu site, Cu(2) is bonded in a distorted trigonal planar geometry to three equivalent P(1) atoms. All Cu(2)-P(1) bond lengths are 2.35 Å. In the third Cu site, Cu(3) is bonded in a distorted trigonal non-coplanar geometry to three equivalent P(1) atoms. All Cu(3)-P(1) bond lengths are 2.35 Å. In the fourth Cu site, Cu(4) is bonded in a 3-coordinate geometry to three equivalent P(1) atoms. There is one shorter (2.36 Å) and two longer (2.45 Å) Cu(4)-P(1) bond lengths. P(1) is bonded in a 8-coordinate geometry to one Cu(3), two equivalent Cu(1), two equivalent Cu(2), and three equivalent Cu(4) atoms.