Na3AgAl3Si3O12Br crystallizes in the monoclinic Cc space group. There are three inequivalent Na sites. In the first Na site, Na(1) is bonded to one O(4), one O(5), one O(9), and one Br(1) atom to form distorted NaBrO3 tetrahedra that share  a cornercorner with one Na(2)BrO3 tetrahedra,  a cornercorner with one Na(3)BrO3 tetrahedra,  a cornercorner with one Ag(1)BrO3 tetrahedra,  a cornercorner with one Al(1)O4 tetrahedra,  a cornercorner with one Al(2)O4 tetrahedra,  a cornercorner with one Al(3)O4 tetrahedra,  a cornercorner with one Si(1)O4 tetrahedra,  a cornercorner with one Si(2)O4 tetrahedra, and  a cornercorner with one Si(3)O4 tetrahedra. In the second Na site, Na(2) is bonded to one O(2), one O(6), one O(8), and one Br(1) atom to form distorted NaBrO3 tetrahedra that share  a cornercorner with one Na(1)BrO3 tetrahedra,  a cornercorner with one Na(3)BrO3 tetrahedra,  a cornercorner with one Ag(1)BrO3 tetrahedra,  a cornercorner with one Al(1)O4 tetrahedra,  a cornercorner with one Al(2)O4 tetrahedra,  a cornercorner with one Al(3)O4 tetrahedra,  a cornercorner with one Si(1)O4 tetrahedra,  a cornercorner with one Si(2)O4 tetrahedra, and  a cornercorner with one Si(3)O4 tetrahedra. In the third Na site, Na(3) is bonded to one O(10), one O(11), one O(12), and one Br(1) atom to form distorted NaBrO3 tetrahedra that share  a cornercorner with one Na(1)BrO3 tetrahedra,  a cornercorner with one Na(2)BrO3 tetrahedra,  a cornercorner with one Ag(1)BrO3 tetrahedra,  a cornercorner with one Al(1)O4 tetrahedra,  a cornercorner with one Si(2)O4 tetrahedra, corners with two equivalent Al(3)O4 tetrahedra, and corners with two equivalent Si(3)O4 tetrahedra. Ag(1) is bonded to one O(1), one O(3), one O(7), and one Br(1) atom to form distorted AgBrO3 tetrahedra that share  a cornercorner with one Na(1)BrO3 tetrahedra,  a cornercorner with one Na(2)BrO3 tetrahedra,  a cornercorner with one Na(3)BrO3 tetrahedra,  a cornercorner with one Al(1)O4 tetrahedra,  a cornercorner with one Si(2)O4 tetrahedra, corners with two equivalent Al(2)O4 tetrahedra, and corners with two equivalent Si(1)O4 tetrahedra. There are three inequivalent Al sites. In the first Al site, Al(1) is bonded to one O(1), one O(12), one O(2), and one O(5) atom to form AlO4 tetrahedra that share  a cornercorner with one Na(1)BrO3 tetrahedra,  a cornercorner with one Na(2)BrO3 tetrahedra,  a cornercorner with one Na(3)BrO3 tetrahedra,  a cornercorner with one Ag(1)BrO3 tetrahedra, corners with two equivalent Si(1)O4 tetrahedra, and corners with two equivalent Si(3)O4 tetrahedra. In the second Al site, Al(2) is bonded to one O(3), one O(4), one O(7), and one O(8) atom to form AlO4 tetrahedra that share  a cornercorner with one Na(1)BrO3 tetrahedra,  a cornercorner with one Na(2)BrO3 tetrahedra,  a cornercorner with one Si(1)O4 tetrahedra,  a cornercorner with one Si(3)O4 tetrahedra, corners with two equivalent Ag(1)BrO3 tetrahedra, and corners with two equivalent Si(2)O4 tetrahedra. In the third Al site, Al(3) is bonded to one O(10), one O(11), one O(6), and one O(9) atom to form AlO4 tetrahedra that share  a cornercorner with one Na(1)BrO3 tetrahedra,  a cornercorner with one Na(2)BrO3 tetrahedra,  a cornercorner with one Si(1)O4 tetrahedra,  a cornercorner with one Si(3)O4 tetrahedra, corners with two equivalent Na(3)BrO3 tetrahedra, and corners with two equivalent Si(2)O4 tetrahedra. There are three inequivalent Si sites. In the first Si site, Si(1) is bonded to one O(1), one O(3), one O(5), and one O(6) atom to form SiO4 tetrahedra that share  a cornercorner with one Na(1)BrO3 tetrahedra,  a cornercorner with one Na(2)BrO3 tetrahedra,  a cornercorner with one Al(2)O4 tetrahedra,  a cornercorner with one Al(3)O4 tetrahedra, corners with two equivalent Ag(1)BrO3 tetrahedra, and corners with two equivalent Al(1)O4 tetrahedra. In the second Si site, Si(2) is bonded to one O(10), one O(7), one O(8), and one O(9) atom to form SiO4 tetrahedra that share  a cornercorner with one Na(1)BrO3 tetrahedra,  a cornercorner with one Na(2)BrO3 tetrahedra,  a cornercorner with one Na(3)BrO3 tetrahedra,  a cornercorner with one Ag(1)BrO3 tetrahedra, corners with two equivalent Al(2)O4 tetrahedra, and corners with two equivalent Al(3)O4 tetrahedra. In the third Si site, Si(3) is bonded to one O(11), one O(12), one O(2), and one O(4) atom to form SiO4 tetrahedra that share  a cornercorner with one Na(1)BrO3 tetrahedra,  a cornercorner with one Na(2)BrO3 tetrahedra,  a cornercorner with one Al(2)O4 tetrahedra,  a cornercorner with one Al(3)O4 tetrahedra, corners with two equivalent Na(3)BrO3 tetrahedra, and corners with two equivalent Al(1)O4 tetrahedra. There are twelve inequivalent O sites. In the first O site, O(1) is bonded in a 2-coordinate geometry to one Ag(1), one Al(1), and one Si(1) atom. In the second O site, O(2) is bonded in a 3-coordinate geometry to one Na(2), one Al(1), and one Si(3) atom. In the third O site, O(3) is bonded in a 3-coordinate geometry to one Ag(1), one Al(2), and one Si(1) atom. In the fourth O site, O(4) is bonded in a 3-coordinate geometry to one Na(1), one Al(2), and one Si(3) atom. In the fifth O site, O(5) is bonded in a distorted trigonal planar geometry to one Na(1), one Al(1), and one Si(1) atom. In the sixth O site, O(6) is bonded in a 3-coordinate geometry to one Na(2), one Al(3), and one Si(1) atom. In the seventh O site, O(7) is bonded in a 2-coordinate geometry to one Ag(1), one Al(2), and one Si(2) atom. In the eighth O site, O(8) is bonded in a distorted trigonal planar geometry to one Na(2), one Al(2), and one Si(2) atom. In the ninth O site, O(9) is bonded in a 3-coordinate geometry to one Na(1), one Al(3), and one Si(2) atom. In the tenth O site, O(10) is bonded in a 3-coordinate geometry to one Na(3), one Al(3), and one Si(2) atom. In the eleventh O site, O(11) is bonded in a 3-coordinate geometry to one Na(3), one Al(3), and one Si(3) atom. In the twelfth O site, O(12) is bonded in a 3-coordinate geometry to one Na(3), one Al(1), and one Si(3) atom. Br(1) is bonded in a tetrahedral geometry to one Na(1), one Na(2), one Na(3), and one Ag(1) atom.
Na3AgAl3Si3O12Br crystallizes in the monoclinic Cc space group. There are three inequivalent Na sites. In the first Na site, Na(1) is bonded to one O(4), one O(5), one O(9), and one Br(1) atom to form distorted NaBrO3 tetrahedra that share  a cornercorner with one Na(2)BrO3 tetrahedra,  a cornercorner with one Na(3)BrO3 tetrahedra,  a cornercorner with one Ag(1)BrO3 tetrahedra,  a cornercorner with one Al(1)O4 tetrahedra,  a cornercorner with one Al(2)O4 tetrahedra,  a cornercorner with one Al(3)O4 tetrahedra,  a cornercorner with one Si(1)O4 tetrahedra,  a cornercorner with one Si(2)O4 tetrahedra, and  a cornercorner with one Si(3)O4 tetrahedra. The Na(1)-O(4) bond length is 2.36 Å. The Na(1)-O(5) bond length is 2.35 Å. The Na(1)-O(9) bond length is 2.35 Å. The Na(1)-Br(1) bond length is 2.96 Å. In the second Na site, Na(2) is bonded to one O(2), one O(6), one O(8), and one Br(1) atom to form distorted NaBrO3 tetrahedra that share  a cornercorner with one Na(1)BrO3 tetrahedra,  a cornercorner with one Na(3)BrO3 tetrahedra,  a cornercorner with one Ag(1)BrO3 tetrahedra,  a cornercorner with one Al(1)O4 tetrahedra,  a cornercorner with one Al(2)O4 tetrahedra,  a cornercorner with one Al(3)O4 tetrahedra,  a cornercorner with one Si(1)O4 tetrahedra,  a cornercorner with one Si(2)O4 tetrahedra, and  a cornercorner with one Si(3)O4 tetrahedra. The Na(2)-O(2) bond length is 2.35 Å. The Na(2)-O(6) bond length is 2.36 Å. The Na(2)-O(8) bond length is 2.36 Å. The Na(2)-Br(1) bond length is 2.96 Å. In the third Na site, Na(3) is bonded to one O(10), one O(11), one O(12), and one Br(1) atom to form distorted NaBrO3 tetrahedra that share  a cornercorner with one Na(1)BrO3 tetrahedra,  a cornercorner with one Na(2)BrO3 tetrahedra,  a cornercorner with one Ag(1)BrO3 tetrahedra,  a cornercorner with one Al(1)O4 tetrahedra,  a cornercorner with one Si(2)O4 tetrahedra, corners with two equivalent Al(3)O4 tetrahedra, and corners with two equivalent Si(3)O4 tetrahedra. The Na(3)-O(10) bond length is 2.36 Å. The Na(3)-O(11) bond length is 2.36 Å. The Na(3)-O(12) bond length is 2.37 Å. The Na(3)-Br(1) bond length is 2.95 Å. Ag(1) is bonded to one O(1), one O(3), one O(7), and one Br(1) atom to form distorted AgBrO3 tetrahedra that share  a cornercorner with one Na(1)BrO3 tetrahedra,  a cornercorner with one Na(2)BrO3 tetrahedra,  a cornercorner with one Na(3)BrO3 tetrahedra,  a cornercorner with one Al(1)O4 tetrahedra,  a cornercorner with one Si(2)O4 tetrahedra, corners with two equivalent Al(2)O4 tetrahedra, and corners with two equivalent Si(1)O4 tetrahedra. The Ag(1)-O(1) bond length is 2.52 Å. The Ag(1)-O(3) bond length is 2.51 Å. The Ag(1)-O(7) bond length is 2.53 Å. The Ag(1)-Br(1) bond length is 2.62 Å. There are three inequivalent Al sites. In the first Al site, Al(1) is bonded to one O(1), one O(12), one O(2), and one O(5) atom to form AlO4 tetrahedra that share  a cornercorner with one Na(1)BrO3 tetrahedra,  a cornercorner with one Na(2)BrO3 tetrahedra,  a cornercorner with one Na(3)BrO3 tetrahedra,  a cornercorner with one Ag(1)BrO3 tetrahedra, corners with two equivalent Si(1)O4 tetrahedra, and corners with two equivalent Si(3)O4 tetrahedra. The Al(1)-O(1) bond length is 1.76 Å. The Al(1)-O(12) bond length is 1.76 Å. The Al(1)-O(2) bond length is 1.76 Å. The Al(1)-O(5) bond length is 1.76 Å. In the second Al site, Al(2) is bonded to one O(3), one O(4), one O(7), and one O(8) atom to form AlO4 tetrahedra that share  a cornercorner with one Na(1)BrO3 tetrahedra,  a cornercorner with one Na(2)BrO3 tetrahedra,  a cornercorner with one Si(1)O4 tetrahedra,  a cornercorner with one Si(3)O4 tetrahedra, corners with two equivalent Ag(1)BrO3 tetrahedra, and corners with two equivalent Si(2)O4 tetrahedra. The Al(2)-O(3) bond length is 1.76 Å. The Al(2)-O(4) bond length is 1.77 Å. The Al(2)-O(7) bond length is 1.76 Å. The Al(2)-O(8) bond length is 1.76 Å. In the third Al site, Al(3) is bonded to one O(10), one O(11), one O(6), and one O(9) atom to form AlO4 tetrahedra that share  a cornercorner with one Na(1)BrO3 tetrahedra,  a cornercorner with one Na(2)BrO3 tetrahedra,  a cornercorner with one Si(1)O4 tetrahedra,  a cornercorner with one Si(3)O4 tetrahedra, corners with two equivalent Na(3)BrO3 tetrahedra, and corners with two equivalent Si(2)O4 tetrahedra. The Al(3)-O(10) bond length is 1.76 Å. The Al(3)-O(11) bond length is 1.76 Å. The Al(3)-O(6) bond length is 1.76 Å. The Al(3)-O(9) bond length is 1.76 Å. There are three inequivalent Si sites. In the first Si site, Si(1) is bonded to one O(1), one O(3), one O(5), and one O(6) atom to form SiO4 tetrahedra that share  a cornercorner with one Na(1)BrO3 tetrahedra,  a cornercorner with one Na(2)BrO3 tetrahedra,  a cornercorner with one Al(2)O4 tetrahedra,  a cornercorner with one Al(3)O4 tetrahedra, corners with two equivalent Ag(1)BrO3 tetrahedra, and corners with two equivalent Al(1)O4 tetrahedra. The Si(1)-O(1) bond length is 1.64 Å. The Si(1)-O(3) bond length is 1.64 Å. The Si(1)-O(5) bond length is 1.64 Å. The Si(1)-O(6) bond length is 1.64 Å. In the second Si site, Si(2) is bonded to one O(10), one O(7), one O(8), and one O(9) atom to form SiO4 tetrahedra that share  a cornercorner with one Na(1)BrO3 tetrahedra,  a cornercorner with one Na(2)BrO3 tetrahedra,  a cornercorner with one Na(3)BrO3 tetrahedra,  a cornercorner with one Ag(1)BrO3 tetrahedra, corners with two equivalent Al(2)O4 tetrahedra, and corners with two equivalent Al(3)O4 tetrahedra. The Si(2)-O(10) bond length is 1.64 Å. The Si(2)-O(7) bond length is 1.64 Å. The Si(2)-O(8) bond length is 1.64 Å. The Si(2)-O(9) bond length is 1.64 Å. In the third Si site, Si(3) is bonded to one O(11), one O(12), one O(2), and one O(4) atom to form SiO4 tetrahedra that share  a cornercorner with one Na(1)BrO3 tetrahedra,  a cornercorner with one Na(2)BrO3 tetrahedra,  a cornercorner with one Al(2)O4 tetrahedra,  a cornercorner with one Al(3)O4 tetrahedra, corners with two equivalent Na(3)BrO3 tetrahedra, and corners with two equivalent Al(1)O4 tetrahedra. The Si(3)-O(11) bond length is 1.64 Å. The Si(3)-O(12) bond length is 1.64 Å. The Si(3)-O(2) bond length is 1.64 Å. The Si(3)-O(4) bond length is 1.64 Å. There are twelve inequivalent O sites. In the first O site, O(1) is bonded in a 2-coordinate geometry to one Ag(1), one Al(1), and one Si(1) atom. In the second O site, O(2) is bonded in a 3-coordinate geometry to one Na(2), one Al(1), and one Si(3) atom. In the third O site, O(3) is bonded in a 3-coordinate geometry to one Ag(1), one Al(2), and one Si(1) atom. In the fourth O site, O(4) is bonded in a 3-coordinate geometry to one Na(1), one Al(2), and one Si(3) atom. In the fifth O site, O(5) is bonded in a distorted trigonal planar geometry to one Na(1), one Al(1), and one Si(1) atom. In the sixth O site, O(6) is bonded in a 3-coordinate geometry to one Na(2), one Al(3), and one Si(1) atom. In the seventh O site, O(7) is bonded in a 2-coordinate geometry to one Ag(1), one Al(2), and one Si(2) atom. In the eighth O site, O(8) is bonded in a distorted trigonal planar geometry to one Na(2), one Al(2), and one Si(2) atom. In the ninth O site, O(9) is bonded in a 3-coordinate geometry to one Na(1), one Al(3), and one Si(2) atom. In the tenth O site, O(10) is bonded in a 3-coordinate geometry to one Na(3), one Al(3), and one Si(2) atom. In the eleventh O site, O(11) is bonded in a 3-coordinate geometry to one Na(3), one Al(3), and one Si(3) atom. In the twelfth O site, O(12) is bonded in a 3-coordinate geometry to one Na(3), one Al(1), and one Si(3) atom. Br(1) is bonded in a tetrahedral geometry to one Na(1), one Na(2), one Na(3), and one Ag(1) atom.