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The sulfur-33 chemical shift and  33 S and  17 O nmr relaxation data are reported for liquid sulfur dioxide. The  33 S nucleus in SO 2  is highly deshielded, 375 ± 2 ppm to high frequency of the sulfate anion. The rotational correlation time of SO 2  at 294 K, 0.3 ps, is only about twice that calculated using an inertial model. The temperature dependence of the  33 S and  17 O nmr relaxation data can be described by an average activation energy of 6.3 ± 0.6 kJ mol −1 . The effective rotational correlation time derived from  33 S nmr line widths is used to calculate the  17 O quadrupolar coupling constant, e 2 qQ/h = 6.6 ± 0.7 MHz, in SO 2 .

33S and 17O nuclear magnetic resonance study of liquid sulfur dioxide

³³S and ¹⁷O nuclear magnetic resonance study of liquid sulfur dioxide