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Two polymorphic modifications of 1-(N-morpholiniomethyl)spirobi- (3-oxo-2,5-dioxa-1-silacyclopentan)- ate hydrate

  • N. Erchak
  • S. BelyakovEmail author
  • I. Kalvinsh
  • K. Pypowski
  • E. Valbahs
  • E. Lukevics
Article

The compound 1-(N-morpholiniomethyl)spirobi(3-oxo-2,5-dioxa-1-silacyclopentan)ate crystallizes from aqueous solution of γ-butyrolactone in the form of two crystal hydrate modifications: monoclinic (with D = 1.53 g/cm3, space group P 21/n) and triclinic (D = 1.45 g/cm3, space group P1-). For the monoclinic form, an X-ray structural study at -100°C has been performed. For both structures the coordination polyhedron of the silicon atom is a trigonal bipyramid. In the crystal structures there are strong intermolecular hydrogen bonds of NH···O and OH···O types.

Keywords

1-(N-morpholiniomethyl)spirobi(3-oxo-2,5-dioxa-1-silacyclopentan)ate crystal structure polymorphism. 

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Copyright information

© Springer Science+Business Media, Inc. 2009

Authors and Affiliations

  • N. Erchak
    • 2
    • 3
  • S. Belyakov
    • 1
    Email author
  • I. Kalvinsh
    • 1
  • K. Pypowski
    • 2
  • E. Valbahs
    • 1
  • E. Lukevics
    • 1
  1. 1.Latvian Institute of Organic SynthesisRigaLatvia
  2. 2.Department of Organic ChemistryUniversity of PodlasieSiedlcePoland
  3. 3.Department of ChemistryBrest State UniversityBrestBelarus

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