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系统地研究了Dawson结构~(13)P—NMR光谱化学位移与结构的关系,对不同结构中P原子的化学位移值给予了指认,同时对未见报道的,α_1-P_2W_(17)N_b、α_1-P_2W_(17)(N_bO_2)、α-1.2-P_2W_(16)N_(b2)、α-1.2-P_2W_(16)(N_bO_2)_2的~(31)P—NMR化学位移值进行了预测。
The relationship between chemical shifts and structure of ~ (13) P-NMR spectra of Dawson structure was systematically studied. The chemical shift values of P atoms in different structures were assigned. At the same time, the chemical shifts of α_1-P_2W_ (17) N_b, The (31) P-NMR chemical shift values of α_1-P_2W_ (17) (N_bO_2), α-1.2-P_2W_ (16) N_ (b2) and α-1.2-P_2W_ (16) (N_bO_2) _2 were predicted.