Acta Crystallographica Section C

Crystal Structure Communications

Volume 59, Part 11 (November 2003)

ta1418 scheme

Acta Cryst. (2003). C59, m435-m438 [doi:10.1107/S0108270103020407]

Magnesium iodide-4,4'-bipyridine-water (1/3/4) and strontium iodide-4,4'-bipyridine-propan-1-ol (1/2.5/2)

B. W. Skelton, A. F. Waters, C. R. Whitaker and A. H. White

Abstract: Both of the title compounds, catena-poly[[[tetraaquamagnesium(I)]- [bold mu] -4,4'-bipyridine- [bold kappa] ²N:N'] diiodide bis(4,4'-bipyridine) solvate], {[Mg(C₁₀H₈N₂)(H₂O)₄]I₂·2C₁₀H₈N₂}_n, (I), and catena-poly[[[-4,4'-bipyridine-bis[diiodobis(propan-1-ol)strontium(I)]]-di--4,4'-bipyridine-⁴N:N'] bis(4,4'-bipyridine) solvate], {[Sr₂I₄(C₁₀H₈N₂)₃(C₃H₈O)₄]·2C₁₀H₈N₂}_n, (II), are one-dimensional polymers which are single- and double-stranded, respectively, the metal atoms being linked by the 4,4'-bipyridine moieties. The Mg complex, (I), is [cis-{(H₂O)₄Mg(N-4,4'-bipyridine-N')_(2/2)}]₍_|₎I₂·4,4'-bipyridine and Mg has a six-coordinate quasi-octahedral coordination environment. The Sr complex, (II), is isomorphous with its previously defined Ba counterpart [Kepert, Waters & White (1996). Aust. J. Chem. 49, 117-135], being [(propan-1-ol)₂I₂Sr(N-4,4'-bipyridine-N')_(3/2)]₍_|₎·4,4'-bipyridine, with the I atoms trans-axial in a seven-coordinate pentagonal-bipyramidal Sr environment.

Formula: [Mg(C₁₀H₈N₂)(H₂O)₄]I₂·2C₁₀H₈N₂ and [Sr₂I₄(C₁₀H₈N₂)₃(C₃H₈O)₄]·2C₁₀H₈N₂

Online 11 October 2003


	Structure factor file (CIF format) (171.3 kbytes) Contains datablock I

	Structure factor file (CIF format) (434.6 kbytes) Contains datablock II

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