Synthesis and x-ray crystal structure of a tin(IV) tetrahalide adduct with a crown ether

  • Valle G
  • Cassol A
  • Russo U
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The polymeric structure of the complex, [SnCl4(H2O)2]18-crown-6·2H2O, prepared by the addition of a solution of SnCl4to 18-crown-6, has been determined by X-ray analysis. The structure has been solved by three-dimensional Patterson-Fourier synthesis to a conventional R-factor of 0.13, by using 1394 reflections with I>3σ(I). The crystals are monoclinic, with a = 15.753(3), b = 15.072(3), c = 12.209(4), β = 97.77°(1.0), z = 4, and space group P21/a. The tin atom is octahedrally coordinated to four chlorine atoms and two water molecules in cis positions. A very complex network of hydrogen bonding links together the tin coordination octahedron, the two water hydration molecules, and the two crystallographically-different half crown-ethers. © 1984.

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  • Giovanni Valle

  • Alberto Cassol

  • Umberto Russo

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