Acta Crystallographica Section C

Crystal Structure Communications

Volume 64, Part 11 (November 2008)

metal-organic compounds

ga3106 scheme

Acta Cryst. (2008). C64, m353-m357 [ doi:10.1107/S0108270108028072 ]

Hydrogen-bonded layers directed by the [3-O₃S-C₆H₄-PO₃H]^2- dianion: catena-poly[[silver(I)--4,4'-bipyridine-²N:N'] 3-[hydroxy(oxido)phosphinoyl]benzenesulfonate trihydrate] and catena-poly[[[tetraaquacobalt(II)]--4,4'-bipyridine-²N:N'] 3-[hydroxy(oxido)phosphinoyl]benzenesulfonate]

Z.-Y. Du, Q.-Y. Liu, H.-R. Wen, Y.-R. Xie and J.-J. Huang

Abstract: Both title compounds, {[Ag₂(C₁₀H₈N₂)₂](C₆H₅O₆PS)·3H₂O}_n, (I), and {[Co(C₁₀H₈N₂)₂(H₂O)₄](C₆H₅O₆PS)}_n, (II), respectively, contain similar novel symmetric dimeric [O₃S-C₆H₄-PO₃H]^2- anions formed via two shared (OHO) H atoms on twofold positions between two -PO₃H^- groups. The two-coordinate Ag^I structure features one-dimensional polymeric chains of {[Ag(4,4'-bipy)]₂²⁺}_n (4,4'-bipy is 4,4'-bipyridine), weakly linked by [pi] - [pi] interactions, separated by the anionic dimers which are stabilized into layers by hydrogen bonding to three water molecules. In (II), a twofold crystallographic axis runs through the one-dimensional {[Co(4,4'-bipy)(H₂O)₄]²⁺}_n chains containing six-coordinate Co^II; three-dimensional packing is provided by hydrogen bonding using all sulfonate and -PO₃H^- O atoms as acceptors and the Co-bound water H atoms as donors. In this latter case, the benzenesulfonate aromatic rings are also constrained to a mirror plane. This report illustrates how a previously unreported dianion can affect the crystallization of polymeric metal complex cations.

Formula: [Ag₂(C₁₀H₈N₂)₂](C₆H₅O₆PS)·3H₂O and [Co(C₁₀H₈N₂)₂(H₂O)₄](C₆H₅O₆PS)


	Structure factor file (CIF format) (322.0 kbytes) [ doi:10.1107/S0108270108028072/ga3106Isup2.hkl ] Contains datablock I

	Structure factor file (CIF format) (120.5 kbytes) [ doi:10.1107/S0108270108028072/ga3106IIsup3.hkl ] Contains datablock II

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