Syntheses and Structural Studies of Nine-Coordinate Mononuclear K[Eu~Ⅲ(edta)(H_2O)_3]·3.5H_2O and B

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The crystal and molecular structures of K[Eu~Ⅲ(edta)(H_2O)_3]·3.5H_2O (H_4 edta=ethylenediaminetetraacetic acid) and K_4[Eu请下载后查看,本文暂不支持在线获取查看简介。Ⅲ__2(Httha)_2]·13.5H_2O (H_6 ttha=triethylenetetraminehexaacetic acid) complexes were determined by single-crystal X-ray structure analyses. The crystal of K[Eu~Ⅲ(edta)(H_2O)_3]·3.5H_2O complex belongs to orthorhombic crystal system and Fdd2 space group. The crystal data are as follows: a=1.9849(6)nm, b=3.5598(11)nm, c=1.2222(4)nm, V=8.636(5)nm~3, Z=16, M=596.37, D_c=1.835 g·cm~(-3), μ=3.166 mm~(-1) and F(000)=4752. The final R and wR values are 0.0269 and 0.0692 for 2936 [I>2.0σ(I)] reflections, and 0.0317 and 0.0708 for all 7284 unique reflections, respectively. The [Eu~Ⅲ(edta)(H_2O)_3]-complex anion has a nine-coordinate pseudo-monocapped square antiprismatic structure in which the nine coordinate atoms, two N and seven O are from one edta ligand and three water molecules. The crystal of the K_4[Eu~Ⅲ_2(Httha)_2]·13.5H_2O complex belongs to monoclinic system and P2(1)/n space group. The crystal data are as follows: a=1.1337(3) nm, b=2.5753(6) nm, c=2.2138(6) nm, β=102.871(5)°, V=6.301(3) nm~3, Z=4, M=1682.33, D_c=1.773 g·cm~(-3), μ=2.339 mm~(-1) and F(000)=3404. The final R and wR are 0.0514 and 0.0906 for 11144 [I>2.0σ(I)] reflections, and 0.0976 and 0.1068 for all 26048 unique reflections, respectively. The complex molecule is composed of two close parts in structure. Every part around the Eu~Ⅲ ion in the [Eu请下载后查看,本文暂不支持在线获取查看简介。Ⅲ__2(Httha)_2]~(4-) complex anion has a nine-coordinate structure with distorted monocapped square antiprismatic prism, in which the ttha ligand coordinates to one central Eu~Ⅲ ion with three N atoms and four O atoms and to the other Eu~Ⅲ ion with two O atoms. The crystal and molecular structures of K [Eu ~ Ⅲ (edta) (H_2O) _3] · 3.5H_2O (H_4 edta = ethylenediaminetetraacetic acid) and K_4 [Eu Please see the download, this article does not support online to view the introduction. Ⅲ__2 (Httha) _2] · 13.5H_2O (H_6 ttha = triethylenetetraminehexaacetic acid) complexes were determined by single-crystal X-ray structure analyzes. The crystal of K [Eu~Ⅲ (edta) (H_2O) _3] · 3.5H_2O complex belongs a = 1.9849 (6) nm, b = 3.5598 (11) nm, c = 1.2222 (4) nm and V = 8.636 (5) nm ~ 3, respectively. The crystal data of the orthorhombic crystal system and the Fdd2 space group Z = 16, M = 596.37, D_c = 1.835 g · cm -3, μ = 3.166 mm -1 and F 000 = 4752. The final R and wR values ​​are 0.0269 and 0.0692 for 2936 [ I> 2.0σ (I)] reflections, and 0.0317 and 0.0708 for all 7284 unique reflections, respectively. The [Eu ~ III (edta) (H_2O) _3] -pleplex anion has a nine-coordinate pseudo-monocapped square antiprismatic structure in The crystal of the K_4 [Eu ~ III_2 (Httha) _2] · 13.5H_2O complex belongs to the monoclinic system and P2 (1) / n space group. The crystal data are as follows: a = 1.1337 (3) nm, b = 2.5753 (6) nm, c = 2.2138 (6) nm, β = 102. 871 (5) °, V = 6.301 (3) nm ~ 3, Z = 4, M = 1682.33, D_c = 1.773 g · cm -3 and μ = 2.339 mm -1 and F (000) = 3404. The final R and wR are 0.0514 and 0.0906 for 11144 [I> 2.0σ (I)] reflections, and 0.0976 and 0.1068 for all 26048 unique reflections, respectively. The complex molecule is composed of two close parts in structure. Every part around the Eu ~ Ⅲ ion in the [Eu Please check after download, this article does not support online access to view profile. Ⅲ__2 (Httha) _2] ~ (4-) complex anion has a nine-coordinate structure with distorted monocapped square antiprismatic prism, in which the ttha ligand coordinates to one central Eu ~ Ⅲ ion with three N atoms and four O atoms and to the other Eu ~ Ⅲ ion with two O atoms.
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