Two fluorine-substituted phosphoryl pseudohalides including the highly explosive diazide FP(O)(N3)2 and diisocyanate FP(O)(NCO)2 have been synthesized and fully characterized with IR (gas-phase and noble-gas matrices), Raman (liquid), and NMR (19F and 31P) spectroscopy. The vibrational spectra of FP(O)(N3)2 and FP(O)(NCO)2 were analyzed with the aid of the B3LYP/6−311+G(3df) calculations, and the assignments
合成了两种
氟取代的
磷酰假卤化物,包括高度爆炸性的
叠氮化物FP(O)(N 3)2和二
异氰酸酯FP(O)(NCO)2,并用IR(气相和稀有气体基质),拉曼光谱进行了充分表征(液体)和NMR(19 F和31 P)光谱。借助B3LYP / 6-311 + G(3df)计算分析了FP(O)(N 3)2和FP(O)(NCO)2的振动谱,并根据a syn-syn和反syn构象异构体的混合物,其中两个假卤素基团(N 3和NCO)采用syn/对P–O键的反构型。FP(O)(NCO)的低温X射线晶体结构2在固态揭示了分子Ç小号具有对称顺式-顺式构象(φ(O1P1-N1C1)= 54.80(15)°)和弱的分子间O⋯C触点(2.901(2)Å)。与气态FP(O)(N 3)2和FP(O)(NCO)2的主要syn - syn构象异构体的实验观察结果一致,在CC
SD(T)/ aug-cc-pVTZ // B3LYP /下进行计算6-311