Acta Crystallographica Section C

Crystal Structure Communications

Volume 59, Part 6 (June 2003)

metal-organic compounds

Acta Cryst. (2003). C59, m207-m211 [ doi:10.1107/S0108270102023600 ]

Isostructural or not? Adducts of some aryltin halides with (E)-1,2-bis(4-pyridyl)ethene

S. A. Bajue, C. Lewis, K. Clarke, F. B. Bramwell, B. O. Patrick and C. P. Brock

Abstract: The title complexes [ [mu] -(E)-4,4'-(ethene-1,2-diyl)dipyridine- [kappa] ²N:N']bis[halotris(4-methylphenyl)tin(IV)], [Sn₂(C₇H₇)₆X₂(C₁₂H₁₀N₂)], where halo is chloro (X = Cl) and bromo (X = Br) are isostructural. In both crystals, the molecules lie on inversion centers, and there are voids of ca 80 Å³ that could, but apparently do not, accommodate water molecules. The corresponding iodo structure (X = I) is almost, but not quite, isostructural with the other two compounds; when Br is changed to I, the length of the c axis decreases by more than 1 Å and the voids are no longer large enough to accomodate any solvent molecule. The related complex [ [mu] -(E)-4,4'-(ethene-1,2-diyl)dipyridine- [kappa] ²N:N']bis[chlorotriphenyltin(IV)], [Sn₂(C₆H₅)₆Cl₂(C₁₂H₁₀N₂)], crystallizes in a related structure, but the molecules lie on general rather than on special positions. The molecular structures of the four complexes are similar, but the conformation of the phenyl derivative is approximately eclipsed rather than staggered.

Formula: Four [Sn₂(aryl)₆₂(C₁₂H₁₀N₂)] structures


	Structure factor file (CIF format) (214.2 kbytes) Contains datablock I

	Structure factor file (CIF format) (216.4 kbytes) Contains datablock II

	Structure factor file (CIF format) (221.4 kbytes) Contains datablock III

	Structure factor file (CIF format) (371.1 kbytes) Contains datablock IV

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