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metal-organic compounds
The crystal structure of the title compound, {[Tm(C8H3O7S)(H2O)5]·1.5C10H8N2·0.5H2O}n, is built up from two [Tm(SIP)(H2O)5] molecules (SIP3− is 5-sulfonatobenzene-1,3-dicarboxylate), three 4,4′-bipyridyl (bpy) molecules and one solvent water molecule. One of the bpy molecules and the solvent water molecule are located on an inversion centre and a twofold rotation axis, respectively. The TmIII ion coordination is composed of four carboxylate O atoms from two trianionic SIP3− ligands and five coordinated water molecules. The Tm3+ ions are linked by the SIP3− ligands to form a one-dimensional zigzag chain propagating along the c axis. The chains are linked by interchain O—H
O hydrogen bonds to generate a two-dimensional layered structure. The bpy molecules are not involved in coordination but are linked by O—HN hydrogen bonds to form two-dimensional layers. The two-dimensional layers are further bridged by the bpy molecules as pillars and the solvent water molecules through hydrogen bonds, giving a three-dimensional supramolecular structure. π–π stacking interactions between the parallel aromatic rings, arranged in an offset fashion with a face-to-face distance of 3.566 (1) Å, are observed in the crystal packing.
O hydrogen bonds to generate a two-dimensional layered structure. The bpy molecules are not involved in coordination but are linked by O—HN hydrogen bonds to form two-dimensional layers. The two-dimensional layers are further bridged by the bpy molecules as pillars and the solvent water molecules through hydrogen bonds, giving a three-dimensional supramolecular structure. π–π stacking interactions between the parallel aromatic rings, arranged in an offset fashion with a face-to-face distance of 3.566 (1) Å, are observed in the crystal packing.
