Acta Cryst. (2007). E63, m3006  [ doi:10.1107/S1600536807057352 ]

catena-Poly[[[aqua(1,10-phenanthroline-²N,N')sodium(I)]--aqua-[diaqua(1,10-phenanthroline-²N,N')sodium(I)]--aqua] dibromide 1,10-phenanthroline solvate]

J. Zhai, H. Yin and D. Wang

Abstract: In the title compound, {[Na₂(C₁₂H₈N₂)₂(H₂O)₅]Br₂·C₁₂H₈N₂}_n, the Na^I ions in polymeric chains adopt two different types of coordination geometry. In one type, the Na^I ion is coordinated by two N atoms from 1,10-phenanthroline (L) and four water molecules in a distorted octahedral geometry, while in the other type, the Na^I ion is coordinated by two N atoms from L and three water molecules in a distorted trigonal-bipyramidal geometry. The coordinating bond lengths Na-N [2.425 (5)-2.517 (5) Å] and Na-O [2.353 (5)-2.574 (4) Å] are normal. The crystal packing exhibits an extensive hydrogen-bonding network (O-HN, O-HO and O-HBr) and - interactions (centroid-centroid distances are 3.821 and 3.896 Å).

Online 14 November 2007

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