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Russian Chemical Bulletin

, Volume 68, Issue 8, pp 1575–1579 | Cite as

Synthesis and structure of new anionic five-coordinate silicon complexes derived from α-hydroxy acids and 1-methylpiperazine-2,5-dione

  • A. A. NikolinEmail author
  • A. A. Korlyukov
  • E. P. Kramarova
  • D. E. Arkhipov
  • A. G. Shipov
  • Yu. I. Baukov
  • Vad. V. Negrebetskii
Full Article
  • 3 Downloads

Abstract

Anionic five-coordinate complexes with two bis-O,O’-chelating ligands bearing α-hydroxy acid moieties, dicyclohexylammonium salts \(\text{Cy}_{2}\text{NH}_{2}{^+}\{\text{PpnCH}_2\text{Si}[\text{OCR}_2\text{C}\text{(O)O]}_2\}^-\) (Cy is cyclohexyl, PpnCH2 is 4-methyl-2,5-dioxopiperazin-1-ylmethyl, R = Me, Ph), were synthesized by esterification of alkoxysilane PpnCH2Si(OMe)3 with α-hydroxy acids (dimethyl- and diphenylgylcolic acids) in the presence of dicyclohexylamine. The five-coordinated state of the silicon atom in the resulting compounds in solution was confirmed by 29Si NMR spectroscopy. According to the X-ray diffraction data, the synthesized compounds contain the SiCO4 coordination unit.

Key words

five-coordinate silicon compounds anionic complexes X-ray diffraction 

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Copyright information

© Springer Science+Business Media, Inc. 2019

Authors and Affiliations

  • A. A. Nikolin
    • 1
    Email author
  • A. A. Korlyukov
    • 1
    • 2
  • E. P. Kramarova
    • 1
  • D. E. Arkhipov
    • 2
  • A. G. Shipov
    • 1
  • Yu. I. Baukov
    • 2
  • Vad. V. Negrebetskii
    • 1
  1. 1.N. I. Pirogov Russian National Research Medical UniversityMoscowRussian Federation
  2. 2.A. N. Nesmeyanov Institute of Organoelement CompoundsRussian Academy of SciencesMoscowRussian Federation

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