Eu3GaP3 crystallizes in the orthorhombic Cmce space group. There are two inequivalent Eu sites. In the first Eu site, Eu(1) is bonded in a 8-coordinate geometry to two equivalent Ga(1), two equivalent P(2), and four equivalent P(1) atoms. In the second Eu site, Eu(2) is bonded in a 7-coordinate geometry to one Ga(1), one P(1), and five equivalent P(2) atoms. Ga(1) is bonded in a distorted body-centered cubic geometry to two equivalent Eu(1), two equivalent Eu(2), two equivalent P(1), and two equivalent P(2) atoms. There are two inequivalent P sites. In the first P site, P(1) is bonded in a 8-coordinate geometry to two equivalent Eu(2), four equivalent Eu(1), and two equivalent Ga(1) atoms. In the second P site, P(2) is bonded in a 7-coordinate geometry to one Eu(1), five equivalent Eu(2), and one Ga(1) atom.
Eu3GaP3 crystallizes in the orthorhombic Cmce space group. There are two inequivalent Eu sites. In the first Eu site, Eu(1) is bonded in a 8-coordinate geometry to two equivalent Ga(1), two equivalent P(2), and four equivalent P(1) atoms. Both Eu(1)-Ga(1) bond lengths are 3.12 Å. Both Eu(1)-P(2) bond lengths are 3.05 Å. There are a spread of Eu(1)-P(1) bond distances ranging from 2.99-3.34 Å. In the second Eu site, Eu(2) is bonded in a 7-coordinate geometry to one Ga(1), one P(1), and five equivalent P(2) atoms. The Eu(2)-Ga(1) bond length is 2.99 Å. The Eu(2)-P(1) bond length is 3.31 Å. There are a spread of Eu(2)-P(2) bond distances ranging from 3.00-3.25 Å. Ga(1) is bonded in a distorted body-centered cubic geometry to two equivalent Eu(1), two equivalent Eu(2), two equivalent P(1), and two equivalent P(2) atoms. Both Ga(1)-P(1) bond lengths are 2.44 Å. Both Ga(1)-P(2) bond lengths are 2.41 Å. There are two inequivalent P sites. In the first P site, P(1) is bonded in a 8-coordinate geometry to two equivalent Eu(2), four equivalent Eu(1), and two equivalent Ga(1) atoms. In the second P site, P(2) is bonded in a 7-coordinate geometry to one Eu(1), five equivalent Eu(2), and one Ga(1) atom.