Acta Cryst. (2008). E64, m551  [ doi:10.1107/S1600536808006338 ]

Poly[[₂-aqua-aqua(₃-3,5-dinitrosalicylato)barium(II)] monohydrate]

W.-D. Song, R.-Z. Fan, C.-S. Gu and X.-M. Hao

Abstract: In the title coordination polymer, {[Ba(C₇H₂N₂O₇)(H₂O)₂]·H₂O}_n, the Ba^II atom is ten-coordinated by seven O atoms from four 3,5-dinitrosalicylatate ligands, two ₂-bridging aqua ligands and one water molecule. The coordination mode is best described as a bicapped square-antiprismatic geometry. The 3,5-dinitrosalicylatate ligands bridge three Ba atoms. Centrosymmetrically related dinuclear barium units, with a BaBa separation of 4.767 (5) Å, form infinite chains, which are further self-assembled into a supramolecular network through intermolecular O-HO hydrogen-bonding interactions between O atoms of 3,5-dinitrosalicylatate ligands and water molecules.

Online 14 March 2008

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