Synthesis and structure of new anionic five-coordinate silicon complexes derived from α-hydroxy acids and 1-methylpiperazine-2,5-dione
- Authors: Nikolin A.A.1, Korlyukov A.A.1,2, Kramarova E.P.1, Arkhipov D.E.2, Shipov A.G.1, Baukov Y.I.2, Negrebetskii V.V.1
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Affiliations:
- N. I. Pirogov Russian National Research Medical University
- A. N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences
- Issue: Vol 68, No 8 (2019)
- Pages: 1575-1579
- Section: Full Article
- URL: https://journals.rcsi.science/1066-5285/article/view/243456
- DOI: https://doi.org/10.1007/s11172-019-2595-z
- ID: 243456
Cite item
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.
About the authors
A. A. Nikolin
N. I. Pirogov Russian National Research Medical University
Author for correspondence.
Email: nikson111@rambler.ru
Russian Federation, 1 ul. Ostrovityanova, Moscow, 117997
A. A. Korlyukov
N. I. Pirogov Russian National Research Medical University; A. N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences
Email: nikson111@rambler.ru
Russian Federation, 1 ul. Ostrovityanova, Moscow, 117997; 28 ul. Vavilova, Moscow, 119991
E. P. Kramarova
N. I. Pirogov Russian National Research Medical University
Email: nikson111@rambler.ru
Russian Federation, 1 ul. Ostrovityanova, Moscow, 117997
D. E. Arkhipov
A. N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences
Email: nikson111@rambler.ru
Russian Federation, 28 ul. Vavilova, Moscow, 119991
A. G. Shipov
N. I. Pirogov Russian National Research Medical University
Email: nikson111@rambler.ru
Russian Federation, 1 ul. Ostrovityanova, Moscow, 117997
Yu. I. Baukov
A. N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences
Email: nikson111@rambler.ru
Russian Federation, 28 ul. Vavilova, Moscow, 119991
Vad. V. Negrebetskii
N. I. Pirogov Russian National Research Medical University
Email: nikson111@rambler.ru
Russian Federation, 1 ul. Ostrovityanova, Moscow, 117997