Acta Crystallographica Section C

Crystal Structure Communications

Volume 60, Part 9 (September 2004)

fg1760 scheme

Acta Cryst. (2004). C60, m460-m464 [doi:10.1107/S0108270104018645]

Poly[[bis[aqua(1,10-phenanthroline)lanthanum(III)]--aqua-di--5-sulfonatoisophthalato] monohydrate] and poly[[[triaqualanthanum(III)]--5-sulfonatoisophthalato] monohydrate]

M.-L. Hu, Q. Miao, Q. Shi and M.-D. Ye

Abstract: In the two related polymeric title compounds, {[La₂(sip)₂(phen)₂(H₂O)₃]·H₂O}_n [sip is the 5-sulfonatoisophthalate trianion (C₈H₃O₇S^3-) and phen is 1,10-phenanthroline (C₁₂H₈N₂)], (I), and {[La(sip)(H₂O)₃]·H₂O}_n, (II), the lanthanum(III) ions are nine-coordinate, with similar distorted monocapped square-antiprism coordination geometry. The two crystal structures are very different. In (I), the sip anion acts as a pentadentate ligand, one of the coordinated water molecules lies on a twofold axis and further inversion, n-glide and translation operations generate a two-dimensional framework. In (II), the sip anion functions as a hexadentate ligand and a three-dimensional network with trinuclear 24-membered rings is developed via inversion, n-glide, twofold-screw and translation operations. Both structures also have extensive O-HO hydrogen-bonded networks and [bold pi] - interactions.

Formula: [La₂(C₈H₃O₇S)₂(C₁₂H₈N₂)₂(H₂O)₃]·H₂O and [La(C₈H₃O₇S)(H₂O)₃]·H₂O

Online 31 August 2004


	Structure factor file (CIF format) (179.5 kbytes) Contains datablock I

	Structure factor file (CIF format) (115.3 kbytes) Contains datablock II

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