NaMg3V3Cr3B3Si6H3O31 crystallizes in the triclinic P1 space group. Na(1) is bonded in a 9-coordinate geometry to one O(1), one O(2), one O(29), one O(3), one O(30), one O(31), one O(7), one O(8), and one O(9) atom. There are three inequivalent Mg sites. In the first Mg site, Mg(1) is bonded to one O(11), one O(18), one O(19), one O(23), one O(24), and one O(4) atom to form MgO6 octahedra that share  a cornercorner with one Cr(2)O6 octahedra,  a cornercorner with one Si(1)O4 tetrahedra,  a cornercorner with one Si(2)O4 tetrahedra,  a cornercorner with one Si(3)O4 tetrahedra,  an edgeedge with one Mg(2)O6 octahedra,  an edgeedge with one V(1)O6 octahedra, and  an edgeedge with one Cr(1)O6 octahedra. The corner-sharing octahedral tilt angles are 54°. In the second Mg site, Mg(2) is bonded to one O(12), one O(17), one O(19), one O(24), one O(25), and one O(5) atom to form MgO6 octahedra that share  a cornercorner with one Cr(3)O6 octahedra,  a cornercorner with one Si(1)O4 tetrahedra,  a cornercorner with one Si(2)O4 tetrahedra,  a cornercorner with one Si(3)O4 tetrahedra,  an edgeedge with one Mg(1)O6 octahedra,  an edgeedge with one V(2)O6 octahedra, and  an edgeedge with one Cr(1)O6 octahedra. The corner-sharing octahedral tilt angles are 53°. In the third Mg site, Mg(3) is bonded to one O(14), one O(21), one O(22), one O(26), one O(28), and one O(6) atom to form MgO6 octahedra that share  a cornercorner with one Cr(1)O6 octahedra,  a cornercorner with one Si(4)O4 tetrahedra,  a cornercorner with one Si(5)O4 tetrahedra,  a cornercorner with one Si(6)O4 tetrahedra,  an edgeedge with one V(3)O6 octahedra,  an edgeedge with one Cr(2)O6 octahedra, and  an edgeedge with one Cr(3)O6 octahedra. The corner-sharing octahedral tilt angles are 55°. There are three inequivalent V sites. In the first V site, V(1) is bonded to one O(10), one O(11), one O(15), one O(29), one O(31), and one O(4) atom to form VO6 octahedra that share  a cornercorner with one Si(1)O4 tetrahedra,  a cornercorner with one Si(5)O4 tetrahedra,  an edgeedge with one Mg(1)O6 octahedra,  an edgeedge with one V(2)O6 octahedra,  an edgeedge with one V(3)O6 octahedra, and  an edgeedge with one Cr(2)O6 octahedra. In the second V site, V(2) is bonded to one O(10), one O(12), one O(16), one O(29), one O(30), and one O(5) atom to form VO6 octahedra that share  a cornercorner with one Si(2)O4 tetrahedra,  a cornercorner with one Si(6)O4 tetrahedra,  an edgeedge with one Mg(2)O6 octahedra,  an edgeedge with one V(1)O6 octahedra,  an edgeedge with one V(3)O6 octahedra, and  an edgeedge with one Cr(3)O6 octahedra. In the third V site, V(3) is bonded to one O(10), one O(13), one O(14), one O(30), one O(31), and one O(6) atom to form VO6 octahedra that share  a cornercorner with one Si(3)O4 tetrahedra,  a cornercorner with one Si(4)O4 tetrahedra,  an edgeedge with one Mg(3)O6 octahedra,  an edgeedge with one V(1)O6 octahedra,  an edgeedge with one V(2)O6 octahedra, and  an edgeedge with one Cr(1)O6 octahedra. There are three inequivalent Cr sites. In the first Cr site, Cr(1) is bonded to one O(13), one O(17), one O(18), one O(23), one O(25), and one O(6) atom to form CrO6 octahedra that share  a cornercorner with one Mg(3)O6 octahedra,  a cornercorner with one Si(1)O4 tetrahedra,  a cornercorner with one Si(2)O4 tetrahedra,  a cornercorner with one Si(3)O4 tetrahedra,  an edgeedge with one Mg(1)O6 octahedra,  an edgeedge with one Mg(2)O6 octahedra, and  an edgeedge with one V(3)O6 octahedra. The corner-sharing octahedral tilt angles are 55°. In the second Cr site, Cr(2) is bonded to one O(15), one O(20), one O(22), one O(26), one O(27), and one O(4) atom to form CrO6 octahedra that share  a cornercorner with one Mg(1)O6 octahedra,  a cornercorner with one Si(4)O4 tetrahedra,  a cornercorner with one Si(5)O4 tetrahedra,  a cornercorner with one Si(6)O4 tetrahedra,  an edgeedge with one Mg(3)O6 octahedra,  an edgeedge with one V(1)O6 octahedra, and  an edgeedge with one Cr(3)O6 octahedra. The corner-sharing octahedral tilt angles are 54°. In the third Cr site, Cr(3) is bonded to one O(16), one O(20), one O(21), one O(27), one O(28), and one O(5) atom to form CrO6 octahedra that share  a cornercorner with one Mg(2)O6 octahedra,  a cornercorner with one Si(4)O4 tetrahedra,  a cornercorner with one Si(5)O4 tetrahedra,  a cornercorner with one Si(6)O4 tetrahedra,  an edgeedge with one Mg(3)O6 octahedra,  an edgeedge with one V(2)O6 octahedra, and  an edgeedge with one Cr(2)O6 octahedra. The corner-sharing octahedral tilt angles are 53°. There are three inequivalent B sites. In the first B site, B(1) is bonded in a trigonal planar geometry to one O(23), one O(28), and one O(29) atom. In the second B site, B(2) is bonded in a trigonal planar geometry to one O(24), one O(26), and one O(30) atom. In the third B site, B(3) is bonded in a trigonal planar geometry to one O(25), one O(27), and one O(31) atom. There are six inequivalent Si sites. In the first Si site, Si(1) is bonded to one O(1), one O(11), one O(17), and one O(7) atom to form SiO4 tetrahedra that share  a cornercorner with one Mg(1)O6 octahedra,  a cornercorner with one Mg(2)O6 octahedra,  a cornercorner with one V(1)O6 octahedra,  a cornercorner with one Cr(1)O6 octahedra,  a cornercorner with one Si(5)O4 tetrahedra, and  a cornercorner with one Si(6)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 46-54°. In the second Si site, Si(2) is bonded to one O(12), one O(18), one O(2), and one O(8) atom to form SiO4 tetrahedra that share  a cornercorner with one Mg(1)O6 octahedra,  a cornercorner with one Mg(2)O6 octahedra,  a cornercorner with one V(2)O6 octahedra,  a cornercorner with one Cr(1)O6 octahedra,  a cornercorner with one Si(4)O4 tetrahedra, and  a cornercorner with one Si(6)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 49-53°. In the third Si site, Si(3) is bonded to one O(13), one O(19), one O(3), and one O(9) atom to form SiO4 tetrahedra that share  a cornercorner with one Mg(1)O6 octahedra,  a cornercorner with one Mg(2)O6 octahedra,  a cornercorner with one V(3)O6 octahedra,  a cornercorner with one Cr(1)O6 octahedra,  a cornercorner with one Si(4)O4 tetrahedra, and  a cornercorner with one Si(5)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 47-56°. In the fourth Si site, Si(4) is bonded to one O(14), one O(20), one O(3), and one O(8) atom to form SiO4 tetrahedra that share  a cornercorner with one Mg(3)O6 octahedra,  a cornercorner with one V(3)O6 octahedra,  a cornercorner with one Cr(2)O6 octahedra,  a cornercorner with one Cr(3)O6 octahedra,  a cornercorner with one Si(2)O4 tetrahedra, and  a cornercorner with one Si(3)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 50-55°. In the fifth Si site, Si(5) is bonded to one O(1), one O(15), one O(21), and one O(9) atom to form SiO4 tetrahedra that share  a cornercorner with one Mg(3)O6 octahedra,  a cornercorner with one V(1)O6 octahedra,  a cornercorner with one Cr(2)O6 octahedra,  a cornercorner with one Cr(3)O6 octahedra,  a cornercorner with one Si(1)O4 tetrahedra, and  a cornercorner with one Si(3)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 46-56°. In the sixth Si site, Si(6) is bonded to one O(16), one O(2), one O(22), and one O(7) atom to form SiO4 tetrahedra that share  a cornercorner with one Mg(3)O6 octahedra,  a cornercorner with one V(2)O6 octahedra,  a cornercorner with one Cr(2)O6 octahedra,  a cornercorner with one Cr(3)O6 octahedra,  a cornercorner with one Si(1)O4 tetrahedra, and  a cornercorner with one Si(2)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 49-54°. There are three inequivalent H sites. In the first H site, H(1) is bonded in a single-bond geometry to one O(4) atom. In the second H site, H(2) is bonded in a single-bond geometry to one O(5) atom. In the third H site, H(3) is bonded in a single-bond geometry to one O(6) atom. There are thirty-one inequivalent O sites. In the first O site, O(1) is bonded in a 2-coordinate geometry to one Na(1), one Si(1), and one Si(5) atom. In the second O site, O(2) is bonded in a 2-coordinate geometry to one Na(1), one Si(2), and one Si(6) atom. In the third O site, O(3) is bonded in a 2-coordinate geometry to one Na(1), one Si(3), and one Si(4) atom. In the fourth O site, O(4) is bonded in a distorted single-bond geometry to one Mg(1), one V(1), one Cr(2), and one H(1) atom. In the fifth O site, O(5) is bonded in a distorted single-bond geometry to one Mg(2), one V(2), one Cr(3), and one H(2) atom. In the sixth O site, O(6) is bonded in a distorted single-bond geometry to one Mg(3), one V(3), one Cr(1), and one H(3) atom. In the seventh O site, O(7) is bonded in a distorted bent 150 degrees geometry to one Na(1), one Si(1), and one Si(6) atom. In the eighth O site, O(8) is bonded in a distorted bent 150 degrees geometry to one Na(1), one Si(2), and one Si(4) atom. In the ninth O site, O(9) is bonded in a bent 150 degrees geometry to one Na(1), one Si(3), and one Si(5) atom. In the tenth O site, O(10) is bonded in a distorted trigonal non-coplanar geometry to one V(1), one V(2), and one V(3) atom. In the eleventh O site, O(11) is bonded in a distorted trigonal planar geometry to one Mg(1), one V(1), and one Si(1) atom. In the twelfth O site, O(12) is bonded in a distorted trigonal planar geometry to one Mg(2), one V(2), and one Si(2) atom. In the thirteenth O site, O(13) is bonded in a trigonal planar geometry to one V(3), one Cr(1), and one Si(3) atom. In the fourteenth O site, O(14) is bonded in a distorted trigonal planar geometry to one Mg(3), one V(3), and one Si(4) atom. In the fifteenth O site, O(15) is bonded in a distorted trigonal planar geometry to one V(1), one Cr(2), and one Si(5) atom. In the sixteenth O site, O(16) is bonded in a distorted trigonal planar geometry to one V(2), one Cr(3), and one Si(6) atom. In the seventeenth O site, O(17) is bonded in a distorted trigonal planar geometry to one Mg(2), one Cr(1), and one Si(1) atom. In the eighteenth O site, O(18) is bonded in a distorted trigonal planar geometry to one Mg(1), one Cr(1), and one Si(2) atom. In the nineteenth O site, O(19) is bonded in a distorted trigonal planar geometry to one Mg(1), one Mg(2), and one Si(3) atom. In the twentieth O site, O(20) is bonded in a distorted trigonal planar geometry to one Cr(2), one Cr(3), and one Si(4) atom. In the twenty-first O site, O(21) is bonded in a distorted trigonal planar geometry to one Mg(3), one Cr(3), and one Si(5) atom. In the twenty-second O site, O(22) is bonded in a distorted trigonal planar geometry to one Mg(3), one Cr(2), and one Si(6) atom. In the twenty-third O site, O(23) is bonded in a distorted trigonal planar geometry to one Mg(1), one Cr(1), and one B(1) atom. In the twenty-fourth O site, O(24) is bonded in a distorted trigonal planar geometry to one Mg(1), one Mg(2), and one B(2) atom. In the twenty-fifth O site, O(25) is bonded in a distorted trigonal planar geometry to one Mg(2), one Cr(1), and one B(3) atom. In the twenty-sixth O site, O(26) is bonded in a distorted trigonal planar geometry to one Mg(3), one Cr(2), and one B(2) atom. In the twenty-seventh O site, O(27) is bonded in a distorted trigonal planar geometry to one Cr(2), one Cr(3), and one B(3) atom. In the twenty-eighth O site, O(28) is bonded in a distorted trigonal planar geometry to one Mg(3), one Cr(3), and one B(1) atom. In the twenty-ninth O site, O(29) is bonded in a 4-coordinate geometry to one Na(1), one V(1), one V(2), and one B(1) atom. In the thirtieth O site, O(30) is bonded in a 4-coordinate geometry to one Na(1), one V(2), one V(3), and one B(2) atom. In the thirty-first O site, O(31) is bonded in a 4-coordinate geometry to one Na(1), one V(1), one V(3), and one B(3) atom.
NaMg3V3Cr3B3Si6H3O31 crystallizes in the triclinic P1 space group. Na(1) is bonded in a 9-coordinate geometry to one O(1), one O(2), one O(29), one O(3), one O(30), one O(31), one O(7), one O(8), and one O(9) atom. The Na(1)-O(1) bond length is 2.79 Å. The Na(1)-O(2) bond length is 2.81 Å. The Na(1)-O(29) bond length is 2.68 Å. The Na(1)-O(3) bond length is 2.79 Å. The Na(1)-O(30) bond length is 2.67 Å. The Na(1)-O(31) bond length is 2.69 Å. The Na(1)-O(7) bond length is 2.87 Å. The Na(1)-O(8) bond length is 2.90 Å. The Na(1)-O(9) bond length is 2.86 Å. There are three inequivalent Mg sites. In the first Mg site, Mg(1) is bonded to one O(11), one O(18), one O(19), one O(23), one O(24), and one O(4) atom to form MgO6 octahedra that share  a cornercorner with one Cr(2)O6 octahedra,  a cornercorner with one Si(1)O4 tetrahedra,  a cornercorner with one Si(2)O4 tetrahedra,  a cornercorner with one Si(3)O4 tetrahedra,  an edgeedge with one Mg(2)O6 octahedra,  an edgeedge with one V(1)O6 octahedra, and  an edgeedge with one Cr(1)O6 octahedra. The corner-sharing octahedral tilt angles are 54°. The Mg(1)-O(11) bond length is 2.13 Å. The Mg(1)-O(18) bond length is 2.06 Å. The Mg(1)-O(19) bond length is 2.03 Å. The Mg(1)-O(23) bond length is 2.10 Å. The Mg(1)-O(24) bond length is 2.02 Å. The Mg(1)-O(4) bond length is 2.17 Å. In the second Mg site, Mg(2) is bonded to one O(12), one O(17), one O(19), one O(24), one O(25), and one O(5) atom to form MgO6 octahedra that share  a cornercorner with one Cr(3)O6 octahedra,  a cornercorner with one Si(1)O4 tetrahedra,  a cornercorner with one Si(2)O4 tetrahedra,  a cornercorner with one Si(3)O4 tetrahedra,  an edgeedge with one Mg(1)O6 octahedra,  an edgeedge with one V(2)O6 octahedra, and  an edgeedge with one Cr(1)O6 octahedra. The corner-sharing octahedral tilt angles are 53°. The Mg(2)-O(12) bond length is 2.13 Å. The Mg(2)-O(17) bond length is 2.08 Å. The Mg(2)-O(19) bond length is 2.03 Å. The Mg(2)-O(24) bond length is 2.04 Å. The Mg(2)-O(25) bond length is 2.04 Å. The Mg(2)-O(5) bond length is 2.14 Å. In the third Mg site, Mg(3) is bonded to one O(14), one O(21), one O(22), one O(26), one O(28), and one O(6) atom to form MgO6 octahedra that share  a cornercorner with one Cr(1)O6 octahedra,  a cornercorner with one Si(4)O4 tetrahedra,  a cornercorner with one Si(5)O4 tetrahedra,  a cornercorner with one Si(6)O4 tetrahedra,  an edgeedge with one V(3)O6 octahedra,  an edgeedge with one Cr(2)O6 octahedra, and  an edgeedge with one Cr(3)O6 octahedra. The corner-sharing octahedral tilt angles are 55°. The Mg(3)-O(14) bond length is 2.13 Å. The Mg(3)-O(21) bond length is 2.08 Å. The Mg(3)-O(22) bond length is 2.06 Å. The Mg(3)-O(26) bond length is 2.05 Å. The Mg(3)-O(28) bond length is 2.03 Å. The Mg(3)-O(6) bond length is 2.16 Å. There are three inequivalent V sites. In the first V site, V(1) is bonded to one O(10), one O(11), one O(15), one O(29), one O(31), and one O(4) atom to form VO6 octahedra that share  a cornercorner with one Si(1)O4 tetrahedra,  a cornercorner with one Si(5)O4 tetrahedra,  an edgeedge with one Mg(1)O6 octahedra,  an edgeedge with one V(2)O6 octahedra,  an edgeedge with one V(3)O6 octahedra, and  an edgeedge with one Cr(2)O6 octahedra. The V(1)-O(10) bond length is 2.08 Å. The V(1)-O(11) bond length is 1.97 Å. The V(1)-O(15) bond length is 2.06 Å. The V(1)-O(29) bond length is 2.07 Å. The V(1)-O(31) bond length is 2.11 Å. The V(1)-O(4) bond length is 2.07 Å. In the second V site, V(2) is bonded to one O(10), one O(12), one O(16), one O(29), one O(30), and one O(5) atom to form VO6 octahedra that share  a cornercorner with one Si(2)O4 tetrahedra,  a cornercorner with one Si(6)O4 tetrahedra,  an edgeedge with one Mg(2)O6 octahedra,  an edgeedge with one V(1)O6 octahedra,  an edgeedge with one V(3)O6 octahedra, and  an edgeedge with one Cr(3)O6 octahedra. The V(2)-O(10) bond length is 2.13 Å. The V(2)-O(12) bond length is 1.96 Å. The V(2)-O(16) bond length is 2.04 Å. The V(2)-O(29) bond length is 2.06 Å. The V(2)-O(30) bond length is 2.06 Å. The V(2)-O(5) bond length is 2.10 Å. In the third V site, V(3) is bonded to one O(10), one O(13), one O(14), one O(30), one O(31), and one O(6) atom to form VO6 octahedra that share  a cornercorner with one Si(3)O4 tetrahedra,  a cornercorner with one Si(4)O4 tetrahedra,  an edgeedge with one Mg(3)O6 octahedra,  an edgeedge with one V(1)O6 octahedra,  an edgeedge with one V(2)O6 octahedra, and  an edgeedge with one Cr(1)O6 octahedra. The V(3)-O(10) bond length is 1.79 Å. The V(3)-O(13) bond length is 1.97 Å. The V(3)-O(14) bond length is 1.95 Å. The V(3)-O(30) bond length is 2.05 Å. The V(3)-O(31) bond length is 2.09 Å. The V(3)-O(6) bond length is 2.12 Å. There are three inequivalent Cr sites. In the first Cr site, Cr(1) is bonded to one O(13), one O(17), one O(18), one O(23), one O(25), and one O(6) atom to form CrO6 octahedra that share  a cornercorner with one Mg(3)O6 octahedra,  a cornercorner with one Si(1)O4 tetrahedra,  a cornercorner with one Si(2)O4 tetrahedra,  a cornercorner with one Si(3)O4 tetrahedra,  an edgeedge with one Mg(1)O6 octahedra,  an edgeedge with one Mg(2)O6 octahedra, and  an edgeedge with one V(3)O6 octahedra. The corner-sharing octahedral tilt angles are 55°. The Cr(1)-O(13) bond length is 2.09 Å. The Cr(1)-O(17) bond length is 1.99 Å. The Cr(1)-O(18) bond length is 2.01 Å. The Cr(1)-O(23) bond length is 2.00 Å. The Cr(1)-O(25) bond length is 2.00 Å. The Cr(1)-O(6) bond length is 2.07 Å. In the second Cr site, Cr(2) is bonded to one O(15), one O(20), one O(22), one O(26), one O(27), and one O(4) atom to form CrO6 octahedra that share  a cornercorner with one Mg(1)O6 octahedra,  a cornercorner with one Si(4)O4 tetrahedra,  a cornercorner with one Si(5)O4 tetrahedra,  a cornercorner with one Si(6)O4 tetrahedra,  an edgeedge with one Mg(3)O6 octahedra,  an edgeedge with one V(1)O6 octahedra, and  an edgeedge with one Cr(3)O6 octahedra. The corner-sharing octahedral tilt angles are 54°. The Cr(2)-O(15) bond length is 2.04 Å. The Cr(2)-O(20) bond length is 2.04 Å. The Cr(2)-O(22) bond length is 2.02 Å. The Cr(2)-O(26) bond length is 1.98 Å. The Cr(2)-O(27) bond length is 2.03 Å. The Cr(2)-O(4) bond length is 2.05 Å. In the third Cr site, Cr(3) is bonded to one O(16), one O(20), one O(21), one O(27), one O(28), and one O(5) atom to form CrO6 octahedra that share  a cornercorner with one Mg(2)O6 octahedra,  a cornercorner with one Si(4)O4 tetrahedra,  a cornercorner with one Si(5)O4 tetrahedra,  a cornercorner with one Si(6)O4 tetrahedra,  an edgeedge with one Mg(3)O6 octahedra,  an edgeedge with one V(2)O6 octahedra, and  an edgeedge with one Cr(2)O6 octahedra. The corner-sharing octahedral tilt angles are 53°. The Cr(3)-O(16) bond length is 2.05 Å. The Cr(3)-O(20) bond length is 2.06 Å. The Cr(3)-O(21) bond length is 2.00 Å. The Cr(3)-O(27) bond length is 2.03 Å. The Cr(3)-O(28) bond length is 1.99 Å. The Cr(3)-O(5) bond length is 2.02 Å. There are three inequivalent B sites. In the first B site, B(1) is bonded in a trigonal planar geometry to one O(23), one O(28), and one O(29) atom. The B(1)-O(23) bond length is 1.36 Å. The B(1)-O(28) bond length is 1.37 Å. The B(1)-O(29) bond length is 1.43 Å. In the second B site, B(2) is bonded in a trigonal planar geometry to one O(24), one O(26), and one O(30) atom. The B(2)-O(24) bond length is 1.34 Å. The B(2)-O(26) bond length is 1.37 Å. The B(2)-O(30) bond length is 1.45 Å. In the third B site, B(3) is bonded in a trigonal planar geometry to one O(25), one O(27), and one O(31) atom. The B(3)-O(25) bond length is 1.35 Å. The B(3)-O(27) bond length is 1.39 Å. The B(3)-O(31) bond length is 1.41 Å. There are six inequivalent Si sites. In the first Si site, Si(1) is bonded to one O(1), one O(11), one O(17), and one O(7) atom to form SiO4 tetrahedra that share  a cornercorner with one Mg(1)O6 octahedra,  a cornercorner with one Mg(2)O6 octahedra,  a cornercorner with one V(1)O6 octahedra,  a cornercorner with one Cr(1)O6 octahedra,  a cornercorner with one Si(5)O4 tetrahedra, and  a cornercorner with one Si(6)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 46-54°. The Si(1)-O(1) bond length is 1.66 Å. The Si(1)-O(11) bond length is 1.63 Å. The Si(1)-O(17) bond length is 1.61 Å. The Si(1)-O(7) bond length is 1.65 Å. In the second Si site, Si(2) is bonded to one O(12), one O(18), one O(2), and one O(8) atom to form SiO4 tetrahedra that share  a cornercorner with one Mg(1)O6 octahedra,  a cornercorner with one Mg(2)O6 octahedra,  a cornercorner with one V(2)O6 octahedra,  a cornercorner with one Cr(1)O6 octahedra,  a cornercorner with one Si(4)O4 tetrahedra, and  a cornercorner with one Si(6)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 49-53°. The Si(2)-O(12) bond length is 1.63 Å. The Si(2)-O(18) bond length is 1.61 Å. The Si(2)-O(2) bond length is 1.66 Å. The Si(2)-O(8) bond length is 1.66 Å. In the third Si site, Si(3) is bonded to one O(13), one O(19), one O(3), and one O(9) atom to form SiO4 tetrahedra that share  a cornercorner with one Mg(1)O6 octahedra,  a cornercorner with one Mg(2)O6 octahedra,  a cornercorner with one V(3)O6 octahedra,  a cornercorner with one Cr(1)O6 octahedra,  a cornercorner with one Si(4)O4 tetrahedra, and  a cornercorner with one Si(5)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 47-56°. The Si(3)-O(13) bond length is 1.67 Å. The Si(3)-O(19) bond length is 1.58 Å. The Si(3)-O(3) bond length is 1.67 Å. The Si(3)-O(9) bond length is 1.65 Å. In the fourth Si site, Si(4) is bonded to one O(14), one O(20), one O(3), and one O(8) atom to form SiO4 tetrahedra that share  a cornercorner with one Mg(3)O6 octahedra,  a cornercorner with one V(3)O6 octahedra,  a cornercorner with one Cr(2)O6 octahedra,  a cornercorner with one Cr(3)O6 octahedra,  a cornercorner with one Si(2)O4 tetrahedra, and  a cornercorner with one Si(3)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 50-55°. The Si(4)-O(14) bond length is 1.64 Å. The Si(4)-O(20) bond length is 1.63 Å. The Si(4)-O(3) bond length is 1.65 Å. The Si(4)-O(8) bond length is 1.64 Å. In the fifth Si site, Si(5) is bonded to one O(1), one O(15), one O(21), and one O(9) atom to form SiO4 tetrahedra that share  a cornercorner with one Mg(3)O6 octahedra,  a cornercorner with one V(1)O6 octahedra,  a cornercorner with one Cr(2)O6 octahedra,  a cornercorner with one Cr(3)O6 octahedra,  a cornercorner with one Si(1)O4 tetrahedra, and  a cornercorner with one Si(3)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 46-56°. The Si(5)-O(1) bond length is 1.66 Å. The Si(5)-O(15) bond length is 1.64 Å. The Si(5)-O(21) bond length is 1.62 Å. The Si(5)-O(9) bond length is 1.64 Å. In the sixth Si site, Si(6) is bonded to one O(16), one O(2), one O(22), and one O(7) atom to form SiO4 tetrahedra that share  a cornercorner with one Mg(3)O6 octahedra,  a cornercorner with one V(2)O6 octahedra,  a cornercorner with one Cr(2)O6 octahedra,  a cornercorner with one Cr(3)O6 octahedra,  a cornercorner with one Si(1)O4 tetrahedra, and  a cornercorner with one Si(2)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 49-54°. The Si(6)-O(16) bond length is 1.65 Å. The Si(6)-O(2) bond length is 1.66 Å. The Si(6)-O(22) bond length is 1.61 Å. The Si(6)-O(7) bond length is 1.65 Å. There are three inequivalent H sites. In the first H site, H(1) is bonded in a single-bond geometry to one O(4) atom. The H(1)-O(4) bond length is 0.98 Å. In the second H site, H(2) is bonded in a single-bond geometry to one O(5) atom. The H(2)-O(5) bond length is 0.98 Å. In the third H site, H(3) is bonded in a single-bond geometry to one O(6) atom. The H(3)-O(6) bond length is 0.98 Å. There are thirty-one inequivalent O sites. In the first O site, O(1) is bonded in a 2-coordinate geometry to one Na(1), one Si(1), and one Si(5) atom. In the second O site, O(2) is bonded in a 2-coordinate geometry to one Na(1), one Si(2), and one Si(6) atom. In the third O site, O(3) is bonded in a 2-coordinate geometry to one Na(1), one Si(3), and one Si(4) atom. In the fourth O site, O(4) is bonded in a distorted single-bond geometry to one Mg(1), one V(1), one Cr(2), and one H(1) atom. In the fifth O site, O(5) is bonded in a distorted single-bond geometry to one Mg(2), one V(2), one Cr(3), and one H(2) atom. In the sixth O site, O(6) is bonded in a distorted single-bond geometry to one Mg(3), one V(3), one Cr(1), and one H(3) atom. In the seventh O site, O(7) is bonded in a distorted bent 150 degrees geometry to one Na(1), one Si(1), and one Si(6) atom. In the eighth O site, O(8) is bonded in a distorted bent 150 degrees geometry to one Na(1), one Si(2), and one Si(4) atom. In the ninth O site, O(9) is bonded in a bent 150 degrees geometry to one Na(1), one Si(3), and one Si(5) atom. In the tenth O site, O(10) is bonded in a distorted trigonal non-coplanar geometry to one V(1), one V(2), and one V(3) atom. In the eleventh O site, O(11) is bonded in a distorted trigonal planar geometry to one Mg(1), one V(1), and one Si(1) atom. In the twelfth O site, O(12) is bonded in a distorted trigonal planar geometry to one Mg(2), one V(2), and one Si(2) atom. In the thirteenth O site, O(13) is bonded in a trigonal planar geometry to one V(3), one Cr(1), and one Si(3) atom. In the fourteenth O site, O(14) is bonded in a distorted trigonal planar geometry to one Mg(3), one V(3), and one Si(4) atom. In the fifteenth O site, O(15) is bonded in a distorted trigonal planar geometry to one V(1), one Cr(2), and one Si(5) atom. In the sixteenth O site, O(16) is bonded in a distorted trigonal planar geometry to one V(2), one Cr(3), and one Si(6) atom. In the seventeenth O site, O(17) is bonded in a distorted trigonal planar geometry to one Mg(2), one Cr(1), and one Si(1) atom. In the eighteenth O site, O(18) is bonded in a distorted trigonal planar geometry to one Mg(1), one Cr(1), and one Si(2) atom. In the nineteenth O site, O(19) is bonded in a distorted trigonal planar geometry to one Mg(1), one Mg(2), and one Si(3) atom. In the twentieth O site, O(20) is bonded in a distorted trigonal planar geometry to one Cr(2), one Cr(3), and one Si(4) atom. In the twenty-first O site, O(21) is bonded in a distorted trigonal planar geometry to one Mg(3), one Cr(3), and one Si(5) atom. In the twenty-second O site, O(22) is bonded in a distorted trigonal planar geometry to one Mg(3), one Cr(2), and one Si(6) atom. In the twenty-third O site, O(23) is bonded in a distorted trigonal planar geometry to one Mg(1), one Cr(1), and one B(1) atom. In the twenty-fourth O site, O(24) is bonded in a distorted trigonal planar geometry to one Mg(1), one Mg(2), and one B(2) atom. In the twenty-fifth O site, O(25) is bonded in a distorted trigonal planar geometry to one Mg(2), one Cr(1), and one B(3) atom. In the twenty-sixth O site, O(26) is bonded in a distorted trigonal planar geometry to one Mg(3), one Cr(2), and one B(2) atom. In the twenty-seventh O site, O(27) is bonded in a distorted trigonal planar geometry to one Cr(2), one Cr(3), and one B(3) atom. In the twenty-eighth O site, O(28) is bonded in a distorted trigonal planar geometry to one Mg(3), one Cr(3), and one B(1) atom. In the twenty-ninth O site, O(29) is bonded in a 4-coordinate geometry to one Na(1), one V(1), one V(2), and one B(1) atom. In the thirtieth O site, O(30) is bonded in a 4-coordinate geometry to one Na(1), one V(2), one V(3), and one B(2) atom. In the thirty-first O site, O(31) is bonded in a 4-coordinate geometry to one Na(1), one V(1), one V(3), and one B(3) atom.