Neutral and Cationic Dialkylsilicon Complexes of 8-hydroxyquinoline N-oxide

Authors

• Michael Viggiani, St. John Fisher University

Document Type

Poster Presentation

Publication Date

4-21-2024

Keywords

fsc2024

Abstract

Dialkylsilicon chelated complexes, R₂Si(QNO)Cl (QNO = 8-oxoquinoline N-oxide; R = Me (1), Et (2), iPr (3)), Me2Si(QNO)F (4), and Me2Si(QNO)(OSO2CF3) (5) were synthesized and characterized by 1H, 13C, 29Si, and 2D NMR spectroscopy, X-ray crystallography, and elemental analysis.  In the solid state, complexes 1-4 exhibit 5-coordinate silicon in trigonal bipyramidal geometries, and 5 forms a separated ion pair with a 4-coordinate silyl cation.  In CDCl3 solution, complexes 1 and 2 undergo reversible chloride ionization facilitated by decreasing temperature and increasing concentration.  Evidence for a possible chelation equilibrium in 4 involving Si←ON bond dissociation is presented.

Comments

Student poster presented at the 2024 Fisher Showcase, St. John Fisher University, April 21, 2024.

Publication Information

Viggiani, Michael, "Neutral and Cationic Dialkylsilicon Complexes of 8-hydroxyquinoline N-oxide" (2024). Fisher Showcase 2024. Paper 30.
https://fisherpub.sjf.edu/fsc2024/30

Please note that the Publication Information provides general citation information and may not be appropriate for your discipline. To receive help in creating a citation based on your discipline, please visit https://libguides.sjf.edu/citations.