Journal of Structural Chemistry

, Volume 46, Issue 5, pp 895–905

Syntheses, characterization, and structure determination of nine-coordinate Na[YIII(edta)(H2O)3]· 5H2O and eight-coordinate Na[YIII(cydta)(H2O)25H2O complexes

Authors

  • J. Wang
    • Department of ChemistryLiaoning University
  • Y. Wang
    • Department of ChemistryLiaoning University
  • Zh. H. Zhang
    • Department of ChemistryLiaoning University
  • X. D. Zhang
    • Department of ChemistryLiaoning University
  • J. Tong
    • Department of ChemistryLiaoning University
  • X. Zh. Liu
    • Department of ChemistryLiaoning University
  • X. Y. Liu
    • Department of ChemistryLiaoning University
  • Y. Zhang
    • Department of ChemistryLiaoning University
  • Zh. J. Pan
    • Department of ChemistryLiaoning University
Article

DOI: 10.1007/s10947-006-0216-9

Cite this article as:
Wang, J., Wang, Y., Zhang, Z.H. et al. J Struct Chem (2005) 46: 895. doi:10.1007/s10947-006-0216-9

Abstract

Syntheses and structure determination of the YIII complexes with ethylenediaminetetraacetic acid (H4edta) and trans-1,2-cyclohexanediaminetetraacetic acid (H4cydta) are reported. The crystal and molecular structures of the complexes, as well as their molecular formulas and compositions, were determined by single-crystal X-ray structure analyses, NMR, IR, thermogravimetric measurements, and elementary analyses. The crystal of the Na[YIII(edta)(H2O)3]·5H2O complex belongs to the orthorhombic crystal system and space group Fdd2. The crystal data are as follows: a = 19.355(5) Å, b = 35.431(11) Å, c = 12.122(3) Å, V = 8313(4) Å3, Z = 16, M = 544.23, Dc = 1.739 g·cm−3, µ = 2.908 mm−1 and F(000) = 4480. The final R and Rw are 0.0483 and 0.1172 for 3284 (I > 2σ(I)) unique reflections, R and Rw are 0.0678 and 0.1440 for all 8499 reflections, respectively. The YIIIN2O7 part in the [YIII(edta)(H2O)3] complex anion has a pseudo-monocapped square antiprismatic nine-coordinate structure, in which the six coordinated atoms (two N and four O) from the edta ligand and three water molecules are coordinated to the central YIII ion directly. The crystal of the Na[YIII(cydta)(H2O)2]·5H2O complex belongs to the triclinic crystal system and \(P\bar 1\) space group. The crystal data are as follows: a = 8.405(2) Å, b = 9.970(2) Å, c = 14.763(4) Å, α = 88.538(4)°, β = 76.193(4)°, γ = 88.100(4)°, V = 1200.6(5) Å 3, Z = 2, M = 580.31, Dc = 1.605 g·cm−3, µ = 2.519 mm−1 and F(000) = 600. The final R and Rw are 0.0381 and 0.0911 for 4198 (I > 2σ(I)) unique reflections, R and Rw are 0.0530 and 0.1041 for all 6186 reflections, respectively. The YIIIN2O6 part in the [YIII(cydta)(H2O)2] complex anion has a pseudo square antiprismatic eight-coordinate structure in which the six coordinated atoms (two N and four O) from the cydta ligand and two water molecules are coordinated to the central YIII ion directly.

Keywords

YIIIethylenediaminetetraacetic acid (edta)trans-1,2-cyclohexanediaminetetraacetic acid (cydta)structure

Copyright information

© Springer Science+Business Media, Inc. 2006