Acta Cryst. (2002). E58, m762-m764  [ doi:10.1107/S1600536802021669 ]

Pentaaqua(-pyridine-2,6-dicarboxylato-N,O,O',O'')(pyridine-2,6-dicarboxylato-N,O,O'')dinickel(II) dihydrate

Y.-H. Wen, Z.-J. Li, Y.-Y. Qin, Y. Kang, Y.-B. Chen, J.-K. Cheng and Y.-G. Yao

Abstract: The title compound, [Ni₂(C₇H₃NO₄)₂(H₂O)₅]·2H₂O, was obtained by the reaction of nickel iodide with dipicolinic acid (pyridine-2,6-dicarboxylic acid) and 1,10-phenanthroline (molar ratio 1:1:1) in EtOH/H₂O. The compound contains two six-coordinated Ni^II ions, which are linked by two O atoms of the same carboxyl group from dipicolinic acid [Ni-O 2.179 (3) and 2.038 (3) Å]. Molecules are connected by van der Waals interactions.

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