La4Ru3FeAs4O4 crystallizes in the tetragonal P-42m space group. La(1) is bonded in a 4-coordinate geometry to four equivalent As(1), one O(1), one O(2), and two equivalent O(3) atoms. There are two inequivalent Ru sites. In the first Ru site, Ru(1) is bonded in a tetrahedral geometry to four equivalent As(1) atoms. In the second Ru site, Ru(2) is bonded in a 6-coordinate geometry to two equivalent Fe(1) and four equivalent As(1) atoms. Fe(1) is bonded in a 8-coordinate geometry to four equivalent Ru(2) and four equivalent As(1) atoms. As(1) is bonded in a 8-coordinate geometry to four equivalent La(1), one Ru(1), two equivalent Ru(2), and one Fe(1) atom. There are three inequivalent O sites. In the first O site, O(1) is bonded to four equivalent La(1) atoms to form a mixture of corner and edge-sharing OLa4 tetrahedra. In the second O site, O(2) is bonded to four equivalent La(1) atoms to form a mixture of corner and edge-sharing OLa4 tetrahedra. In the third O site, O(3) is bonded to four equivalent La(1) atoms to form a mixture of corner and edge-sharing OLa4 tetrahedra.
La4Ru3FeAs4O4 crystallizes in the tetragonal P-42m space group. La(1) is bonded in a 4-coordinate geometry to four equivalent As(1), one O(1), one O(2), and two equivalent O(3) atoms. There are two shorter (3.36 Å) and two longer (3.48 Å) La(1)-As(1) bond lengths. The La(1)-O(1) bond length is 2.39 Å. The La(1)-O(2) bond length is 2.38 Å. Both La(1)-O(3) bond lengths are 2.39 Å. There are two inequivalent Ru sites. In the first Ru site, Ru(1) is bonded in a tetrahedral geometry to four equivalent As(1) atoms. All Ru(1)-As(1) bond lengths are 2.41 Å. In the second Ru site, Ru(2) is bonded in a 6-coordinate geometry to two equivalent Fe(1) and four equivalent As(1) atoms. Both Ru(2)-Fe(1) bond lengths are 2.91 Å. All Ru(2)-As(1) bond lengths are 2.49 Å. Fe(1) is bonded in a 8-coordinate geometry to four equivalent Ru(2) and four equivalent As(1) atoms. All Fe(1)-As(1) bond lengths are 2.56 Å. As(1) is bonded in a 8-coordinate geometry to four equivalent La(1), one Ru(1), two equivalent Ru(2), and one Fe(1) atom. There are three inequivalent O sites. In the first O site, O(1) is bonded to four equivalent La(1) atoms to form a mixture of corner and edge-sharing OLa4 tetrahedra. In the second O site, O(2) is bonded to four equivalent La(1) atoms to form a mixture of corner and edge-sharing OLa4 tetrahedra. In the third O site, O(3) is bonded to four equivalent La(1) atoms to form a mixture of corner and edge-sharing OLa4 tetrahedra.