ISSN:
0749-1581
Schlagwort(e):
29Si NMR
;
Siloxane
;
Alkoxysilane
;
Diethoxydimethysilane
;
Polymers
;
Oligomers
;
2D NMR INEPT DQF COSY
;
29Si—29Si natural abundance NMR correlations
;
Chemistry
;
Analytical Chemistry and Spectroscopy
Quelle:
Wiley InterScience Backfile Collection 1832-2000
Thema:
Chemie und Pharmazie
Notizen:
In order to determine the nature and the structure of polymers formed by condensation of alkoxysilanes, a two-dimensional INEPT double quantum filtered COSY NMR experiment was developed to observe 29Si—29Si correlations at 29Si natural abundance. This experiment was tested on a mixture containing a trimer, [(CH3)3SiO]2Si(CH3)2, and a tetramer, [(CH3)3SiOSi(CH3)2]2O. This 2D INEPT DQF COSY experiment was then used to investigate the nature and the structure of the polymers which are formed in the early stages of the condensation reaction of diethoxydimethylsilane (DEDMS) in a DEDMS-water mixture containing a small amount of water at low pH (1.0).
Zusätzliches Material:
6 Ill.
Materialart:
Digitale Medien
URL:
http://dx.doi.org/10.1002/mrc.1260310704
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