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The crystal and molecular structures of the K[TbⅢ(edta)(H2O)3]-5H2O (edta = ethylenediaminetetraacetic acid) and K4[TbⅢ2(Httha)2]+14H2O (ttha = triethylenetetraminehexaacetic acid) complexes have been determined by sin-gle-crystal X-ray diffraction analyses. The crystal of the K[TbⅢ(edta)(H2O)3]·5H2O complex belongs to orthorhombic crys-tal system and Fdd2 space group. The crystal data are as follows: a = 1.9373(5) nm, b = 3.5429(10) nm, c = 1.2114(3) nm, V = 8.315(4) nm3, Z= 16, M = 630.35, Dc = 2.014 g cn-3, m = 3.683 mm-1 and F(000) = 5024. The final R and wR values are 0.0224 and 0.0557 for 3189 [I> 2.0o(I)] unique reflections, and 0.0245 and 0.0567 for all 8206 reflections, respectively. The [TbⅢ(edta)(H2O)3]- complex anion has a nine-coordinated pseudo-monocapped square antiprismatic structure in which the nine coordinate atoms, two N and seven O come from one edta ligand and three water molecules. The crystal of the K4[TbⅢ2(Httha)2]·14H2O complex belongs to monoclinic system and P2(1)/n sp
The crystal and molecular structures of the K [TbIII (edta) (H2O) 3] -5H2O (edta = ethylenediaminetetraacetic acid) and K4 [TbIII2 (Httha) 2] +14H2O (ttha = triethylenetetraminehexaacetic acid) The crystal of the K [TbIII (edta) (H2O) 3] 5H2O complex belongs to orthorhombic crys-tal system and Fdd2 space group. The crystal data are as follows: a = 1.9373 ( 5 = nm, b = 3.5429 (10) nm, c = 1.2114 (3) nm, V = 8.315 (4) nm3, Z = 16, M = 630.35, Dc = 2.014 g cn-3, m = 3.683 mm-1 and F (000) = 5024. The final R and wR values are 0.0224 and 0.0557 for 3189 [I> 2.0o (I)] unique reflections, and 0.0245 and 0.0567 for all 8206 reflections, respectively. The [TbIII (edta) H2O) 3] - complex anion has a nine-coordinated pseudo-monocapped square antiprismatic structure in which the nine coordinate atoms, two N and seven O come from one edta ligand and three water molecules. The crystal of the K4 [TbIII2 (Httha) 2] · 14H2O complex belongs to monoclini c system and P2 (1) / n sp