Na4Eu2GeP4 is alpha Pu-derived structured and crystallizes in the monoclinic Cc space group. There are four inequivalent Na sites. In the first Na site, Na(1) is bonded in a 6-coordinate geometry to one Ge(1), one P(1), one P(2), one P(3), and two equivalent P(4) atoms. In the second Na site, Na(2) is bonded in a 4-coordinate geometry to one P(1), one P(4), and two equivalent P(3) atoms. In the third Na site, Na(3) is bonded in a 4-coordinate geometry to one P(1), one P(4), and two equivalent P(2) atoms. In the fourth Na site, Na(4) is bonded in a 4-coordinate geometry to one P(1), one P(2), one P(3), and one P(4) atom. There are two inequivalent Eu sites. In the first Eu site, Eu(1) is bonded in a 5-coordinate geometry to one P(1), one P(2), one P(3), and two equivalent P(4) atoms. In the second Eu site, Eu(2) is bonded in a 3-coordinate geometry to one P(1), two equivalent P(2), and two equivalent P(3) atoms. Ge(1) is bonded in a 4-coordinate geometry to one Na(1), one P(1), one P(2), one P(3), and one P(4) atom. There are four inequivalent P sites. In the first P site, P(4) is bonded in a 8-coordinate geometry to one Na(2), one Na(3), one Na(4), two equivalent Na(1), two equivalent Eu(1), and one Ge(1) atom. In the second P site, P(1) is bonded in a 7-coordinate geometry to one Na(1), one Na(2), one Na(3), one Na(4), one Eu(1), one Eu(2), and one Ge(1) atom. In the third P site, P(2) is bonded in a 8-coordinate geometry to one Na(1), one Na(4), two equivalent Na(3), one Eu(1), two equivalent Eu(2), and one Ge(1) atom. In the fourth P site, P(3) is bonded in a 8-coordinate geometry to one Na(1), one Na(4), two equivalent Na(2), one Eu(1), two equivalent Eu(2), and one Ge(1) atom.
Na4Eu2GeP4 is alpha Pu-derived structured and crystallizes in the monoclinic Cc space group. There are four inequivalent Na sites. In the first Na site, Na(1) is bonded in a 6-coordinate geometry to one Ge(1), one P(1), one P(2), one P(3), and two equivalent P(4) atoms. The Na(1)-Ge(1) bond length is 3.24 Å. The Na(1)-P(1) bond length is 3.00 Å. The Na(1)-P(2) bond length is 3.32 Å. The Na(1)-P(3) bond length is 3.07 Å. There is one shorter (3.04 Å) and one longer (3.29 Å) Na(1)-P(4) bond length. In the second Na site, Na(2) is bonded in a 4-coordinate geometry to one P(1), one P(4), and two equivalent P(3) atoms. The Na(2)-P(1) bond length is 3.16 Å. The Na(2)-P(4) bond length is 2.86 Å. There is one shorter (2.89 Å) and one longer (2.99 Å) Na(2)-P(3) bond length. In the third Na site, Na(3) is bonded in a 4-coordinate geometry to one P(1), one P(4), and two equivalent P(2) atoms. The Na(3)-P(1) bond length is 3.07 Å. The Na(3)-P(4) bond length is 2.84 Å. There is one shorter (2.92 Å) and one longer (3.01 Å) Na(3)-P(2) bond length. In the fourth Na site, Na(4) is bonded in a 4-coordinate geometry to one P(1), one P(2), one P(3), and one P(4) atom. The Na(4)-P(1) bond length is 3.17 Å. The Na(4)-P(2) bond length is 2.96 Å. The Na(4)-P(3) bond length is 2.91 Å. The Na(4)-P(4) bond length is 2.95 Å. There are two inequivalent Eu sites. In the first Eu site, Eu(1) is bonded in a 5-coordinate geometry to one P(1), one P(2), one P(3), and two equivalent P(4) atoms. The Eu(1)-P(1) bond length is 3.08 Å. The Eu(1)-P(2) bond length is 3.02 Å. The Eu(1)-P(3) bond length is 3.13 Å. There is one shorter (3.01 Å) and one longer (3.17 Å) Eu(1)-P(4) bond length. In the second Eu site, Eu(2) is bonded in a 3-coordinate geometry to one P(1), two equivalent P(2), and two equivalent P(3) atoms. The Eu(2)-P(1) bond length is 2.97 Å. There is one shorter (3.00 Å) and one longer (3.24 Å) Eu(2)-P(2) bond length. There is one shorter (3.00 Å) and one longer (3.15 Å) Eu(2)-P(3) bond length. Ge(1) is bonded in a 4-coordinate geometry to one Na(1), one P(1), one P(2), one P(3), and one P(4) atom. The Ge(1)-P(1) bond length is 2.43 Å. The Ge(1)-P(2) bond length is 2.39 Å. The Ge(1)-P(3) bond length is 2.44 Å. The Ge(1)-P(4) bond length is 2.35 Å. There are four inequivalent P sites. In the first P site, P(4) is bonded in a 8-coordinate geometry to one Na(2), one Na(3), one Na(4), two equivalent Na(1), two equivalent Eu(1), and one Ge(1) atom. In the second P site, P(1) is bonded in a 7-coordinate geometry to one Na(1), one Na(2), one Na(3), one Na(4), one Eu(1), one Eu(2), and one Ge(1) atom. In the third P site, P(2) is bonded in a 8-coordinate geometry to one Na(1), one Na(4), two equivalent Na(3), one Eu(1), two equivalent Eu(2), and one Ge(1) atom. In the fourth P site, P(3) is bonded in a 8-coordinate geometry to one Na(1), one Na(4), two equivalent Na(2), one Eu(1), two equivalent Eu(2), and one Ge(1) atom.