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Zwitterionic spirocyclic λ5Si-silicates with twocis-1,2-diphenylethene-1,2-diolato(2–) ligands: Synthesis and structural characterization

✍ Scribed by Simona Dragota; Rüdiger Bertermann; Christian Burschka; Joachim Heermann; Martin Penka; Ingo Richter; Brigitte Wagner; Reinhold Tacke

Book ID
111611532
Publisher
Springer
Year
2002
Tongue
English
Weight
123 KB
Volume
1
Category
Article
ISSN
1569-0660

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The syntheses of the zwitterionic spirocyclic k 5 Sisilicates 6±9 are described. These chiral zwitterions contain a pentacoordinate (formally negatively charged) silicon atom and a tetracoordinate (formally positively charged) nitrogen atom. Compounds 6 ´1/ 2 HO(CH 2 ) 2 OH, 7, 8 ´CH 3 CN, and 9 wer

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The syntheses of the zwitterionic spirocyclic k 5 Si-silicates 7±14 are described. The chiral zwitterions contain a pentacoordinate (formally negatively charged) silicon atom and a tetracoordinate (formally positively charged) nitrogen atom, the ate and onium center being connected by an alkylene gr