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Reaction of trimethylaluminum with crown ethers. IV. Crystal structure of (18-crown-6)tetrakis-(trimethylaluminum)·p-xylene solvate

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Abstract

The title compound was prepared by the addition of A1Me3 to a suspension of 18-crown-6 inp-xylene. The large, colorless, air-sensitive crystals belong to the monoclinic space group P21/n witha=14.822(6),b=7.894(4),c=18.805(6) Å,β=105.40(4)°, andD calc=1.03 g cm−3 forZ=2. The finalR value based on 1758 observed reflections is 0.043. The molecule lies on a crystallographic inversion center and exhibits four strong Al-O bonds. The two independent Al-O distances are 1.978(3) and 2.000(3) Å. The oxygen atoms deviate from the mean plane of the crown, alternating above and below, by 0.13, 0.15, and 0.20 Å, respectively. Thep-xylene molecule is also positioned about a center of inversion.

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Authors and Affiliations

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

    Hongming Zhang, C. Mitchell Means, N. Carlene Means & Jerry L. Atwood

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  1. Hongming Zhang
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  2. C. Mitchell Means
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  3. N. Carlene Means
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  4. Jerry L. Atwood
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Zhang, H., Mitchell Means, C., Carlene Means, N. et al. Reaction of trimethylaluminum with crown ethers. IV. Crystal structure of (18-crown-6)tetrakis-(trimethylaluminum)·p-xylene solvate. Journal of Crystallographic and Spectroscopic Research 15, 445–452 (1985). https://doi.org/10.1007/BF01171048

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  • DOI: https://doi.org/10.1007/BF01171048

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