13C-NMR SpectroscopyHNMR SPECTROSCOPY
13C讲义-NMR Spectroscopy 13C-NMRSpectroscopy END
carbon-13 NMR spectroscopydistortionless enhancement - by polarization transfer (DEPT) pulse sequence2-D proton–carbon (single bond) correlated spectroscopyHSQC techniqueDEPT-edited HSQC of morpholine compoundHMQC/HSQC spectra - useful in resolving problems2-D proton–carbon (multiple bond) correlated ...
求翻译:Spectroscopy (FTIR, 1H NMR, 13C NMR,是什么意思?待解决 悬赏分:1 - 离问题结束还有 Spectroscopy (FTIR, 1H NMR, 13C NMR,问题补充:匿名 2013-05-23 12:21:38 光谱(FTIR,1H NMR,13C NMR, 匿名 2013-05-23 12:23:18 磁共振频谱(ftir、1h核磁共振、13c核磁共振、 匿名 2013-05-23...
Paschal : 13C Nmr Spectroscopy: Comparison of the Spectra of Some Dimeric Catharanthus Alkaloids and their Derivatives. Org. Magn. Res. 8 , 413 (1976).Dorman, D.E. and Paschal, J.W., " 13C n.m.r. Spectroscopy: Comparison of the Spectra of some Dimeric Catharanthus Alkaloids and their...
13 C NMR spectroscopy of head-to-head polystyrene: Molecular motion in solutionHead-to-head polystyrene was studied by NMR relaxation measurements in solution and these measurements were compared with those for head-to-tail polystyrene. By measuring the relaxation of the ortho and meta carbons of ...
14、ces the sensitivity of carbon nuclei bonded to hydrogen.,Unlike proton nmr spectroscopy, the relative strength of carbon nmr signals are not normally proportional to the number of atoms generating each one. Because of this, the number of discrete signals and their chemical shifts are the most...
13C-NMR讲述.ppt,13C-核磁共振波谱法 Nuclear Magnetic Resonance Spectroscopy 一、概述 13C核磁共振波谱的原理与1H核磁共振基本相同。所有有机化合物都含有碳和氢元素,由于13C的化学位移范围(0~240)远大于H核的化学位移(0~15),因此13C核谱分辨率高。几乎每一种化学
,2D-NMR表示方法: 堆积图谱和等高线图谱,后者常用。,1.2D同核化学位移相关谱 (2D-homonuclear shift correlated spectroscopy,1H-1HCOSY或COSY谱) 两个频率轴都表示化学位移,对角线上的信号与一维谱相同,在偏离对角线的两侧可 16、以获得交叉峰。交叉峰以对称形式出现,说明了对应于对角线上的两个质子之间存在着...