Characterization of stationary phases for gas chromatography by 29Si nuclear magnetic resonance spectroscopy III. Carborane-siloxane copolymers.

Five bis(dimethylsilyl)-m-carborane-siloxane polymers with methyl, phenyl, and 2-cyanoethyl ligands were characterized by (1)H, (11)B, (13)C, and (29)Si nuclear magnetic resonance (NMR) spectroscopy. All relevant chemical shifts are reported, whereas signal assignment was confirmed by 2D NMR spectroscopy. The chemical composition of the polymers was… CONTINUE READING