Cu3P is Sodium arsenide structured and crystallizes in the trigonal P-3m1 space group. There are three inequivalent Cu sites. In the first Cu site, Cu(1) is bonded in a 11-coordinate geometry to one Cu(2), three equivalent Cu(1), three equivalent Cu(3), and four equivalent P(1) atoms. In the second Cu site, Cu(2) is bonded in a distorted single-bond geometry to one Cu(1) and four equivalent P(1) atoms. In the third Cu site, Cu(3) is bonded in a distorted trigonal planar geometry to three equivalent Cu(1) and three equivalent P(1) atoms. P(1) is bonded in a 11-coordinate geometry to three equivalent Cu(3), four equivalent Cu(1), and four equivalent Cu(2) atoms.
Cu3P is Sodium arsenide structured and crystallizes in the trigonal P-3m1 space group. There are three inequivalent Cu sites. In the first Cu site, Cu(1) is bonded in a 11-coordinate geometry to one Cu(2), three equivalent Cu(1), three equivalent Cu(3), and four equivalent P(1) atoms. The Cu(1)-Cu(2) bond length is 2.49 Å. All Cu(1)-Cu(1) bond lengths are 2.62 Å. All Cu(1)-Cu(3) bond lengths are 2.70 Å. There is one shorter (2.31 Å) and three longer (2.57 Å) Cu(1)-P(1) bond lengths. In the second Cu site, Cu(2) is bonded in a distorted single-bond geometry to one Cu(1) and four equivalent P(1) atoms. There is one shorter (2.31 Å) and three longer (2.71 Å) Cu(2)-P(1) bond lengths. In the third Cu site, Cu(3) is bonded in a distorted trigonal planar geometry to three equivalent Cu(1) and three equivalent P(1) atoms. All Cu(3)-P(1) bond lengths are 2.34 Å. P(1) is bonded in a 11-coordinate geometry to three equivalent Cu(3), four equivalent Cu(1), and four equivalent Cu(2) atoms.