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| Titel: |
Synthesis and structural determination of the first eight-coordinate rare earth metal complex with a six-member ring, (NH4)[EuIII(pdta)(H2O)] · H2O |
| Auteur: |
Wang, J. Gao, G. R. Zhang, ZH. H. Zhang, X. D. Liu, X. ZH. Kong, Y. M. Li, Y. |
| Verschenen in: |
Journal of coordination chemistry |
| Paginering: | Jaargang 59 (2006) nr. 18 pagina's 2113-2123 |
| Jaar: |
2006-12-15 |
| Inhoud: |
(NH4)[EuIII(pdta)(H2O)] · H2O has been synthesized and characterized by infrared spectrum, fluorescence spectrum, elemental analyses and single-crystal X-ray diffraction techniques. It crystallizes in the monoclinic system with space group P21/n, a = 12.7700(15) Å, b = 9.3885(11) Å, c = 14.4070(18) Å, α = 90°, β = 95.950(2)°, γ = 90°, V = 1718.0(4) Å3, Z = 4, M = 508.28, Dc = 1.965 g cm-3, μ = 3.708 mm-1, F(000) = 1108. The structure was refined to R1 = 0.0238 for 3469 observed reflections (I > 2σ(I)). The EuIIIN2O6 part in the [EuIII(pdta)(H2O)]- complex anion has an eight-coordinate structure with a distorted square anti-prismatic conformation, in which six coordination positions, two nitrogen atoms and four oxygen atoms are from one pdta (=propylenediaminetetraacetic acid) ligand, the seventh position is an oxygen (O(8A)) from another pdta and the eighth coordination site is occupied by a water molecule. (NH4)[EuIII(pdta)(H2O)] · H2O is the first eight-coordinate complex with a six-member ring in the rare earth metal complexes with aminopolycarboxylic acid ligands. |
| Uitgever: |
Taylor & Francis |
| Bronbestand: |
Elektronische Wetenschappelijke Tijdschriften |
Details van artikel 38 van 51 gevonden artikelen
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