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The crystal and molecular structures of isoperezone, aminoperezone, and isoaminoperezone: a comparative study of their crystal packing

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Abstract

The crystal structures of isoperezone (1), aminoperezone (2), and isoaminoperezone (3) have been determined by single-crystal X-ray diffraction. Compound (1) yields orange crystals, orthorhombic space group P212121 with unit cell dimensions a = 6.271(6), b = 30.373(7), c = 7.257(1) Å, and Z = 4; compound (2) yields purple crystals, orthorhombic space group P212121 with unit cell dimensions a = 6.498(3), b = 7.500(1) c = 29.200(6) Å, and Z = 4; compound (3) yields purple crystals, monoclinic space group P21 with unit cell dimensions a = 7.354(1), b = 7.511(1), c = 13.283(1) Å, β = 102,07(1)°, and Z = 2. The side chains in (1)–(3) are oriented out of the plane of the quinone ring at an angle of 124, 144, and 97°, respectively. The molecules in the crystal are held together by hydrogen-bonding networks and van der Waals interactions.

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Authors and Affiliations

  1. Instituto de Quimica, U.N.A.M., Circuito Exterior. Cd. Universitaria, Coyoacan, 04510, Mexico, D.F. Mexico

    Raúl G. Enríquez & Juan M. Fernández-G

  2. Centro de Quimica, Instituto de Ciencias, BUAP, Puebla, 72000, Mexico

    Dino Gnecco

  3. Departamento de Quimica, Centro de Investigacion y de Estudios, Avanzados del IPN, Apartado Postal 14-740, 07000, Mexico, D.F. Mexico

    Alain Pénicaud

  4. Department of Chemistry, University of Toronto, Toronto, Ontario, M5S 1A1, Canada

    William F. Reynolds

Authors
  1. Raúl G. Enríquez
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  2. Juan M. Fernández-G
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  3. Dino Gnecco
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  4. Alain Pénicaud
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  5. William F. Reynolds
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Enríquez, R.G., Fernández-G, J.M., Gnecco, D. et al. The crystal and molecular structures of isoperezone, aminoperezone, and isoaminoperezone: a comparative study of their crystal packing. Journal of Chemical Crystallography 28, 529–537 (1998). https://doi.org/10.1023/A:1023292005612

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