聚氧乙烯-六氟砷酸锂复合物不同结晶结构的13C谱归属

摘要

Depending on the annealing temperature, PEO/LiAsF6complex can form two different crystalline structures. The13C NMR spectra of both structures show high spectral resolution. In this study, 2D exchange13C experiment and13C fp-RFDR (finite-pulse radio-frequency-driven recoupling) DQ-SQ (double quantum-single quantum) experiment were used to assign the resonances of crystalline PEO/LiAsF6complexes. The results are useful for better understanding of the molecular motions in different crystalline structures.%聚氧乙烯-六氟砷酸锂复合物在不同的退火温度下会形成两种不同的结晶结构，其固体核磁共振13C谱具有很高的分辨率。利用二维交换13C谱和13C fp-RFDR(finite-pulse radio-frequency-driven recoupling)双量子-单量子(DQ-SQ)实验对复合物结晶的信号进行归属，为从分子水平上研究结晶区中不同-CH2-基团的运动提供实验依据。