Acta Cryst. (2004). E60, m479-m481  [ doi:10.1107/S1600536804006415 ]

Dihydronium 2,6-diaminopyridinium tris(2,6-pyridinedicarboxylato)ytterbate(III) dihydrate

M. Rafizadeh, M. Ranjbar and V. Amani

Abstract: The reaction of ytterbium(III) chloride with a self-assembling pyridine-containing ligand system, [H₂pyda]²⁺[pydc]^2- [pyda is 2,6-diaminopyridine (C₅H₇N₃) and pydcH₂ is 2,6-pyridinedicarboxylic acid (C₇H₅NO₄)], in water leads to the formation of the title Yb^III complex, (H₅O₂)(Hpyda)₂[Yb(pydc)₃]·2H₂O. The Yb atom lies on a twofold rotation axis and is nine-coordinate with a distorted tricapped trigonal-prismatic geometry. The formula unit of the complex contains one (H₅O₂)⁺ dihydronium cation on a twofold rotation axis, two protonated pyda molecules and two water molecules.

Copyright © International Union of Crystallography
IUCr Webmaster