Unique (3,12)-Connected Inorganic Lanthanide Cluster Polymer Based on Octahedral Hexanuclear Europium Hydroxide Clusters and Sulfate Anions: Synthesis, Structure and Luminescence Yan-Qiong Sun,*† Hong-Xin Mei,† Han-Hui Zhang, † Yi-Ping Chen, † and Rui-Qing Sun† † Department of Chemistry, Fuzhou University, Fuzhou 350108, P. R. China, *Corresponding author. Tel: (+86)-591-22866340. Fax: (+86)-591-22866340. E-mail: sunyq@fzu.edu.cn Figure S1. The asymmetric unit of 1 with labeling scheme. As shown in Figure S1, In the asymmetrical units of 1, there are three crystallographically independent Eu3+ ions and two SO42- anions. 19 Figure S2. The coordination environments of Eu1 atom in 1. (left) The ball-stick representation. (right) The polyhedral representation. Atoms having “A”, in their labels are symmetry-generated. Symmetry code: A: 1-x, 1-y, 1-z. Figure S3. The coordination environments of Eu2 atom in 1. (left) The ball-stick representation. (right) The polyhedral representation. Atoms having “A”, “B”, or “C” in their labels are symmetry-generated. Symmetry code: A: 1-x, 1-y, 1-z; B: 1-x, -y, 1-z; C: x, y, 1+z. Figure S4. The coordination environments of Eu3 atom in 1. (left) The ball-stick representation. (right) The polyhedral representation. Atoms having “A”, “B”, “C” or “D” in their labels are symmetry-generated. Symmetry code: A: 1-x, 1-y, 1-z; B: 1-x, -y, 1-z; C: x, y, 1+z ; D : -1+x, 20 1+y, z. All the Eu3+ cations are nine-coordinated in a tricapped trigonal prism. In addition to one interstitial and four hydroxide O atoms, The Eu1 ions are coordinated by two OS atoms from two distinct SO42- anions and two water molecules; the Eu2 ions are bonded to three OS atoms of three SO42- anions and one water molecules; and the remaining coordination positions of Eu3 atoms are occupied by the four OS atoms of three SO42- anions. The Eu-O bond distances are in the range of 2.34 to 2.68 Å. Figure S5. Two types of coordination modes of SO42- anions in 1. The two unique SO42- anions adopt two different coordinations: one behaves as a μ5-SO4 mode linking four Eu atoms in one bidentate and three monodentate modes; the other acts as μ4-SO4 mode connecting four Eu centers in four monodentate modes. Figure S6. 1-D zigzag inorganic lanthanide cluster chain running along the a axis. Figure S7. 1-D ladderlike chain running along the c axis. 21 Figure S8. 1-D ladderlike chain running along the b axis. The hexanuclear [Eu6(μ6-O)(μ3-OH)8]8+ cluster units are connected through bridging μ2-OS to form an interesting 1-D zigzag inorganic lanthanide cluster chain running along the a axis, furthermore, there are two types of ladderlike chains built from hexanuclear [Eu6(μ6-O)(μ3-OH)8]8+ cluster units bridged by SO42- anions running along the b and c axis. Figure S9. 3-D framework viewed along the [100] Figure S10. 3-D framework viewed along the [010] 22 Figure S11. 3-D framework viewed along the [001] (a) (b) Figure S12. (a) Schematic representation of lanthanide cluster as a 12-connected node. (b) (3,12)-Connected topological net of 1. Yellow triangles and cyan octahedrons represent 3-connected SO42- anions and 12-connected [Eu6(μ6-O)(μ3-OH)8]8+ cluster units, respectively. Complex 1 exhibits a novel (3,12)-connected topological net with a point symbol of (43)4(420.628.818) and a vertex symbol of symbol: [4.4.4.4.4.4.4. 4.4.4.4.4.4.4.4.4.4.4.4.4.6(2).6(2).6(2).6(2).6(2).6(2).6(2).6(2).6(2).6(2).6(2).6(2).6(2) .6(2).6(2).6(2).6(2).6(2).6(2).6(2).6(2).6(2).6(2).6(2).6(4).6(4).6(4).6(4).8(8).8(8).8(1 6).8(16).8(16).8(16).8(20).8(20).8(20).8(20).8(20).8(20).8(20).8(20).8(32).8(32).8(32 ).8(32)] by TOPOS,[2,3] whose topological type is 3,12T2(binary ttd). The computed results of (3, 12)-connected net of 1 by TOPOS 4.0 are as follows: Structure consists of 3D framework with TiSc2S2 Coordination sequences ---------------------- 23 S1: 1 2 3 4 5 6 7 8 9 10 Num 3 28 19 126 51 286 99 510 163 798 Cum 4 32 51 177 228 514 613 1123 1286 2084 ---------------------Sc1: 1 2 3 4 5 6 7 8 9 10 Num 3 28 19 126 51 286 99 510 163 798 Cum 4 32 51 177 228 514 613 1123 1286 2084 ---------------------Ti1: 1 2 3 4 5 6 7 8 9 10 Num 12 10 76 34 204 74 396 130 652 202 Cum 13 23 99 133 337 411 807 937 1589 1791 ---------------------TD10=2025 Vertex symbols for selected sublattice -------------------------------------S1 Point (Schlafli) symbol:{4^3} Extended point symbol:[4.4.4(3)] -------------------------------------Sc1 Point (Schlafli) symbol:{4^3} Extended point symbol:[4.4.4(3)] -------------------------------------Ti1 Point (Schlafli) symbol:{4^20.6^28.8^18} Extended point symbol:[4.4.4.4.4.4.4.4.4.4.4.4.4.4.4.4.4.4.4.4.6(2).6(2).6(2).6(2).6(2).6(2).6(2).6(2).6(2).6(2).6(2) .6(2).6(2).6(2).6(2).6(2).6(2).6(2).6(2).6(2).6(2).6(2).6(2).6(2).6(4).6(4).6(4).6(4).8(8).8(8).8(16). 8(16).8(16).8(16).8(20).8(20).8(20).8(20).8(20).8(20).8(20).8(20).8(32).8(32).8(32).8(32)] -------------------------------------Point (Schlafli) symbol for net: {4^20.6^28.8^18}{4^3}4 3,12-c net with stoichiometry (3-c)4(12-c); 2-nodal net Topological type: 3,12T2 (binary.ttd) {4^20.6^28.8^18}{4^3}4 VS [4.4.4.4.4.4.4.4.4.4.4.4.4.4.4.4.4.4.4.4.6.6.6.6.6.6.6.6.6.6.6.6.6.6.6.6.6.6.6.6.6.6.6.6.6(3).6(3).6(3). 6(3).8(4).8(4).8(4).8(4).8(4).8(4).8(4).8(4).8(24).8(24).8(24).8(24).*.*.*.*.*.*] [4.4.4(3)] (71251 types in 10 databases) Elapsed time: 4.13 sec. The computed results of (3,12)-connected net of 1 by SYSTRE are as follows: Structure of dimension 3. Given space group is P-1. 5 nodes and 12 edges in repeat unit as given. Given repeat unit is accurate. 24 Point group has 16 elements. 2 kinds of node. Equivalences for non-unique nodes: 2 --> 1 Coordination sequences: Node 1: 3 28 19 126 51 286 99 510 163 798 Node 3: 12 10 76 34 204 74 396 130 652 202 TD10 = 2025.4000 Ideal space group is I4/mmm. Ideal group differs from given (I4/mmm vs P-1). Structure is new for this run. Relaxed cell parameters: a = 2.35870, b = 2.35870, c = 1.48972 alpha = 90.0000, beta = 90.0000, gamma = 90.0000 Cell volume: 8.28798 Relaxed positions: Node 1: 0.30054 0.30054 0.00000 Node 3: 0.00000 0.00000 1.00000 Edges: 0.00000 0.00000 1.00000 <-> 0.19946 0.19946 0.50000 0.00000 0.00000 1.00000 <-> 0.30054 0.30054 1.00000 Edge centers: 0.09973 0.09973 0.75000 0.15027 0.15027 1.00000 Edge statistics: minimum = 0.99874, maximum = 1.00252, average = 1.00000 Angle statistics: minimum = 48.22758, maximum = 180.00000, average = 101.53846 Shortest non-bonded distance = 0.81762 Degrees of freedom: 3 References 1. Sheldrick, G. M. SHELXL-97, program for the refinement of the crystal structures. University of Göttingen, Germany, 1997. 2. Dolomanov, O. V.; Blake, A. J.; Charmpness, N. R.; Schröder, M. J.; Appl. Crystallogr., 2003, 36, 1283; 3. Blatov, V. A. ; 2007, http://www.topos.ssu.samara.ru/. 25