Chemistry of mixtures of bis-[trimethoxysilylpropyl]amine and vinyltriacetoxysilane: an NMR analysis |
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| Authors: | Tammy Metroke Yimin Wang Wim J van Ooij Dale W Schaefer |
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| Institution: | (1) Department of Chemistry, Oklahoma State University, 107 Physical Sciences, Stillwater, OK 74078, USA;(2) Present address: 139 Barnes, Building 1117, Tyndall AFB, FL 32403, USA;(3) Department of Chemical and Materials Engineering, University of Cincinnati, Cincinnati, OH 45221-0012, USA;(4) Present address: Radiation Monitoring Devices, Inc., 44 Hunt St., Watertown, MA 02472, USA |
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| Abstract: | 13C, 29Si, and 1H NMR were used to investigate the interaction of bis-trimethoxysilylpropyl]amine (silane A) with vinyltriacetoxysilane (silane
V). The reaction was found to generate a hydroxylamine, an amide and a silanol. A series of hydrolysis and condensation reactions
were found to occur concurrently with the formation of the major reaction products. Upon dilution with acidified water, the
amide decomposes, initiating hydrolysis of unreacted silanes. Hydrogen bonding between the N–H and SiOH groups is likely to
be responsible for the stability of the dilute solutions. |
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| Keywords: | Silane stability NMR Bis-silane Dilution |
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