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Interaction of aromatic hydrocarbons with organometallic compounds of the main group elements: VI. Synthesis and crystal structure of cesium diiododimethylaluminatep-xylene solvate, Cs[Al(CH3)2I2]·C6H4(CH3)2

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Abstract

The crystal structure of thep-xylene solvate of cesium diiododimethylaluminate has been determined from counter data, and refined by full-matrix least-squares techniques. The crystals belong to the orthorhombic space groupC2221 witha = 12.577(4),b = 9.311(3),c = 14.256(4) Å, andD x = 2.19 g cm−3 forZ = 4. The finalR value for 481 observed reflections is 0.036. The anion resides on a two-fold axis; the Al-I bond length is 2.647(4) Å, and the Al-C distance, 1.98(2) Å. Important bond angles include I-Al-I′, 102.3(2) °; C-Al-C′, 115(1) °; I-Al-C, 114(3) °; and I-Al-C′, 106(3) °. The cesium ion also lies on the two-fold axis. Throughout the crystal the cesium ions are separated byp-xylene molecules. The Cs ⋯ C distances average 3.84 Å. In the lattice the iodine atoms reside on thea,b face diagonals (and symmetry-related positions) and are situated almost exactly between the cesium ions. The Cs ⋯ I contact, 3.925(1) Å, is consistent with a significant bonding interaction.

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Authors and Affiliations

  1. Department of Chemistry, University of Alabama University, 35486, Alabama

    Robin D. Rogers & Jerry L. Atwood

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  1. Robin D. Rogers
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  2. Jerry L. Atwood
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For Part V see Atwood et al. (1978).

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Rogers, R.D., Atwood, J.L. Interaction of aromatic hydrocarbons with organometallic compounds of the main group elements: VI. Synthesis and crystal structure of cesium diiododimethylaluminatep-xylene solvate, Cs[Al(CH3)2I2]·C6H4(CH3)2 . Journal of Crystal and Molecular Structure 9, 45–53 (1979). https://doi.org/10.1007/BF01370925

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  • DOI: https://doi.org/10.1007/BF01370925

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