SrC7N10 crystallizes in the monoclinic Pc space group. Sr(1) is bonded in a 11-coordinate geometry to one N(2), one N(3), one N(5), one N(6), one N(7), one N(8), one N(9), two equivalent N(1), and two equivalent N(4) atoms. There are seven inequivalent C sites. In the first C site, C(1) is bonded to one N(1), one N(2), one N(3), and one N(6) atom to form a mixture of corner and edge-sharing CN4 tetrahedra. In the second C site, C(2) is bonded to one N(2), one N(3), one N(4), and one N(6) atom to form a mixture of corner and edge-sharing CN4 tetrahedra. In the third C site, C(3) is bonded to one N(4), one N(5), one N(7), and one N(8) atom to form corner-sharing CN4 tetrahedra. In the fourth C site, C(4) is bonded to one N(10), one N(2), one N(7), and one N(9) atom to form corner-sharing CN4 tetrahedra. In the fifth C site, C(5) is bonded to one N(1), one N(7), one N(8), and one N(9) atom to form corner-sharing CN4 tetrahedra. In the sixth C site, C(6) is bonded to one N(10), one N(3), one N(5), and one N(8) atom to form corner-sharing CN4 tetrahedra. In the seventh C site, C(7) is bonded to one N(10), one N(5), one N(6), and one N(9) atom to form corner-sharing CN4 tetrahedra. There are ten inequivalent N sites. In the first N site, N(9) is bonded in a distorted trigonal non-coplanar geometry to one Sr(1), one C(4), one C(5), and one C(7) atom. In the second N site, N(10) is bonded in a trigonal planar geometry to one C(4), one C(6), and one C(7) atom. In the third N site, N(1) is bonded in a distorted bent 150 degrees geometry to two equivalent Sr(1), one C(1), and one C(5) atom. In the fourth N site, N(2) is bonded in a 3-coordinate geometry to one Sr(1), one C(1), one C(2), and one C(4) atom. In the fifth N site, N(3) is bonded in a 3-coordinate geometry to one Sr(1), one C(1), one C(2), and one C(6) atom. In the sixth N site, N(4) is bonded in a 2-coordinate geometry to two equivalent Sr(1), one C(2), and one C(3) atom. In the seventh N site, N(5) is bonded in a distorted trigonal planar geometry to one Sr(1), one C(3), one C(6), and one C(7) atom. In the eighth N site, N(6) is bonded in a distorted trigonal planar geometry to one Sr(1), one C(1), one C(2), and one C(7) atom. In the ninth N site, N(7) is bonded in a distorted trigonal planar geometry to one Sr(1), one C(3), one C(4), and one C(5) atom. In the tenth N site, N(8) is bonded in a distorted trigonal planar geometry to one Sr(1), one C(3), one C(5), and one C(6) atom.
SrC7N10 crystallizes in the monoclinic Pc space group. Sr(1) is bonded in a 11-coordinate geometry to one N(2), one N(3), one N(5), one N(6), one N(7), one N(8), one N(9), two equivalent N(1), and two equivalent N(4) atoms. The Sr(1)-N(2) bond length is 2.75 Å. The Sr(1)-N(3) bond length is 2.65 Å. The Sr(1)-N(5) bond length is 2.83 Å. The Sr(1)-N(6) bond length is 2.81 Å. The Sr(1)-N(7) bond length is 2.76 Å. The Sr(1)-N(8) bond length is 2.73 Å. The Sr(1)-N(9) bond length is 2.75 Å. There is one shorter (2.60 Å) and one longer (2.67 Å) Sr(1)-N(1) bond length. There is one shorter (2.58 Å) and one longer (2.69 Å) Sr(1)-N(4) bond length. There are seven inequivalent C sites. In the first C site, C(1) is bonded to one N(1), one N(2), one N(3), and one N(6) atom to form a mixture of corner and edge-sharing CN4 tetrahedra. The C(1)-N(1) bond length is 1.41 Å. The C(1)-N(2) bond length is 1.48 Å. The C(1)-N(3) bond length is 1.53 Å. The C(1)-N(6) bond length is 1.46 Å. In the second C site, C(2) is bonded to one N(2), one N(3), one N(4), and one N(6) atom to form a mixture of corner and edge-sharing CN4 tetrahedra. The C(2)-N(2) bond length is 1.51 Å. The C(2)-N(3) bond length is 1.49 Å. The C(2)-N(4) bond length is 1.41 Å. The C(2)-N(6) bond length is 1.48 Å. In the third C site, C(3) is bonded to one N(4), one N(5), one N(7), and one N(8) atom to form corner-sharing CN4 tetrahedra. The C(3)-N(4) bond length is 1.40 Å. The C(3)-N(5) bond length is 1.50 Å. The C(3)-N(7) bond length is 1.51 Å. The C(3)-N(8) bond length is 1.56 Å. In the fourth C site, C(4) is bonded to one N(10), one N(2), one N(7), and one N(9) atom to form corner-sharing CN4 tetrahedra. The C(4)-N(10) bond length is 1.46 Å. The C(4)-N(2) bond length is 1.46 Å. The C(4)-N(7) bond length is 1.45 Å. The C(4)-N(9) bond length is 1.48 Å. In the fifth C site, C(5) is bonded to one N(1), one N(7), one N(8), and one N(9) atom to form corner-sharing CN4 tetrahedra. The C(5)-N(1) bond length is 1.37 Å. The C(5)-N(7) bond length is 1.61 Å. The C(5)-N(8) bond length is 1.52 Å. The C(5)-N(9) bond length is 1.50 Å. In the sixth C site, C(6) is bonded to one N(10), one N(3), one N(5), and one N(8) atom to form corner-sharing CN4 tetrahedra. The C(6)-N(10) bond length is 1.45 Å. The C(6)-N(3) bond length is 1.45 Å. The C(6)-N(5) bond length is 1.46 Å. The C(6)-N(8) bond length is 1.47 Å. In the seventh C site, C(7) is bonded to one N(10), one N(5), one N(6), and one N(9) atom to form corner-sharing CN4 tetrahedra. The C(7)-N(10) bond length is 1.45 Å. The C(7)-N(5) bond length is 1.49 Å. The C(7)-N(6) bond length is 1.49 Å. The C(7)-N(9) bond length is 1.46 Å. There are ten inequivalent N sites. In the first N site, N(9) is bonded in a distorted trigonal non-coplanar geometry to one Sr(1), one C(4), one C(5), and one C(7) atom. In the second N site, N(10) is bonded in a trigonal planar geometry to one C(4), one C(6), and one C(7) atom. In the third N site, N(1) is bonded in a distorted bent 150 degrees geometry to two equivalent Sr(1), one C(1), and one C(5) atom. In the fourth N site, N(2) is bonded in a 3-coordinate geometry to one Sr(1), one C(1), one C(2), and one C(4) atom. In the fifth N site, N(3) is bonded in a 3-coordinate geometry to one Sr(1), one C(1), one C(2), and one C(6) atom. In the sixth N site, N(4) is bonded in a 2-coordinate geometry to two equivalent Sr(1), one C(2), and one C(3) atom. In the seventh N site, N(5) is bonded in a distorted trigonal planar geometry to one Sr(1), one C(3), one C(6), and one C(7) atom. In the eighth N site, N(6) is bonded in a distorted trigonal planar geometry to one Sr(1), one C(1), one C(2), and one C(7) atom. In the ninth N site, N(7) is bonded in a distorted trigonal planar geometry to one Sr(1), one C(3), one C(4), and one C(5) atom. In the tenth N site, N(8) is bonded in a distorted trigonal planar geometry to one Sr(1), one C(3), one C(5), and one C(6) atom.