Jäger C, Herzog K, Thomas B, Feike M, Kunath-Fandrei G
Max-Planck-Institut für Polymerforschung, Mainz, Germany.
Solid State Nucl Magn Reson. 1995 Oct;5(1):51-61. doi: 10.1016/0926-2040(95)00048-u.
The magic-angle spinning sidebands of the satellite transition (ST, m = +/- 3/2 <==> +/- 1/2) for 11B nuclear magnetic resonance (11B ST spectroscopy) have been used to detect multiple boron sites in Na2O-B2O3-SiO2 glasses. The experimental details and data analysis are described, how multiple BO4 and BO3 units can be distinguished using standard magic-angle spinning. For a 16Na2O-30B2O3-53.9SiO2 glass (0.1 MnO) two BO4 units with chemical shifts of -2.5 and 0 ppm were found which differ considerably in their quadrupole interaction. Besides this we found three different BO3 units with approximate chemical shifts of 17, 15, and 19 ppm. The results are compared with earlier measurements.
11B核磁共振（11B卫星跃迁光谱）中卫星跃迁（ST，m = +/- 3/2 <==> +/- 1/2）的魔角旋转边带已用于检测Na2O-B2O3-SiO2玻璃中的多个硼位点。描述了实验细节和数据分析，以及如何使用标准魔角旋转区分多个BO4和BO3单元。对于16Na2O-30B2O3-53.9SiO2玻璃（0.1MnO），发现了两个化学位移分别为-2.5和0 ppm的BO4单元，它们的四极相互作用差异很大。除此之外，我们还发现了三个化学位移约为17、15和19 ppm的不同BO3单元。将结果与早期测量结果进行了比较。
