Abstract The paper presents the analysis of the structures of four novel sulfonamide-based bis -amidines, and four novel interesting intermediates leading to them, named bis -nitriles, in solid-state based on 13 C CP/MAS NMRspectroscopy and theoretical calculations of shielding constants at DFT level of theory. We have observed double 13 C resonances in solid-state spectra as compared with solution
摘要 本文基于 13 C CP/MAS NMR 光谱和理论计算,分析了四种新型磺酰胺基双脒和导致它们的四种新型中间体,即双腈,在固态下的结构。 DFT 理论水平的屏蔽常数。与溶液光谱相比,我们在固态光谱中观察到了双 13 C 共振。对实验化学位移和屏蔽计算的考虑使我们能够定义关于固态中最可能构象的基本几何细节。所有化合物在不对称单元中都有一个独立的分子,固态 NMR 信号分裂的主要原因是烷氧基片段(甲基和连接基)相对于苯环的不同取向。