英语翻译The 1H NMR spectra of complexes 1 and 2 are shown in Fig.1.The proton chemical shifts are assigned with the influence of steric,inductive and conjugative effects and compared with those of similar compounds [18].For each of the two comple

1H NMR是什么 英语翻译The 1H and 13C NMR spectra were recorded using a 300MHz Bruker FTNMR Ultra Shields spectrometer. 英语翻译For studying the nature of the interaction between sensorQB and Zn2+/Cd2+,1H NMR titrations were also carried out(Figure 5 and Table S2,Supporting Information).Uponinteraction with Zn2+ and Cd2+,the protons of the methoxyCH3 experienced s 13C-NMR与1H-NMR有何异同（优缺点）? 英语翻译Complex formation of a- and b-cyclodextrinswith isomeric pyridinecarboxylic acids (picolinic,nicotinicand isonicotinic acids) in water were studied by calorimetryand 1H NMR at 298.15 K.The obtained results revealed theweak 1:1 complex for 1H-NMR D为什么1H-NMR图谱中没有D的信号呢?D的自旋磁量子数又不为0,也有NMR信号啊! 什么是亲H-NMR谱图, H-NMR C-NMR HPLC 能够说我么 英语翻译1H NMR (500 MHz,CDCl3):d7.38 (m,5H),5.27(s,2H),4.05 (t,J56.5 Hz,2H),3.14 (t,J56.5 Hz,2H),2.64 (t,J56.5 Hz,2H),1.59 (m,2H),1.28 (m,10H),0.87 (t,J57.0 Hz,3H).13C NMR (125 MHz,CDCl3):d192.2,171.9,160.1,134.3,128.7,128.6,128.5,67.9,65.0,34.2, 英语翻译The 1H NMR spectra of complexes 1 and 2 are shown in Fig.1.The proton chemical shifts are assigned with the influence of steric,inductive and conjugative effects and compared with those of similar compounds [18].For each of the two comple 英语翻译The 1H NMR spectra of complexes 1 and 2 are shown in Fig.1.The proton质子 chemical shifts are assigned with the influence of steric空间,inductive引入 and conjugative共轭 effects and compared with those of similar compounds [18].Fo 13CNMR 波谱的化学位移为什么远大于1H NMR波谱的化学位移 英语翻译Compound 5a:Yield 72.1% of oil; 1H NMR (300 MHz,CDCl 3) 7.70-7.74 (m,2H,3-Ph-2,6-2H),7.46-7.52 (m,3H,Ph-6-H+3-Ph-3,5-2H),7.34-7.37 (m,2H,Ph-3,5-2H),7.27-7.29 (m,1H,3-Ph-4-H),7.24-7.25 (m,1H,Ph-4-H),5.79 (s,1H,Py-4-H),5.02 (s,2H,CH 2),4.06 D2O在利用1H-NMR进行化合物的结构鉴定中,有什么特别的用处吗? 下列化合物的1H—NMR谱图中吸收峰的数目正确的是 请解释D 1H NMR中的j（频率）的值是怎么计算得来的,表示怎么,怎么看. 已知某有机物的分子式为C5H10O,试根据下列1H NMR谱推断其结构 B的分子式为C8H8O2 NMR谱 1H 5H 2H 若已知B为芳香族化合物,试推断B的结构简式