2023年11月19日 · dept谱分为三种： ①dept 135°：伯碳ch3、叔碳ch为正吸收信号，出正峰；仲碳ch2为负吸收信号，出负峰；季碳c消失，不出峰。 ②dept 90°：叔碳ch为正吸收信号，出正峰；其他碳不出峰。 ③dept 45°：季碳c，不出峰；伯碳ch3、仲碳ch2、叔碳ch出正峰。

DEPT谱（Distortionless Enhancement by Polarization Transfer），又称为无畸变极化转移技术，是一种碳谱核磁共振谱中的一种检测技术，主要用于区分碳谱图中的伯碳、仲碳、叔碳和季碳。

dept(135°谱主要用来识别一级、二级、三级、四级碳原子。 在 DEPT(135°)谱中，一级碳原子(CH3）、三级碳原子(CH)为向上的峰，二级碳原子(CH2）为向下的峰，没有四级碳原子(C）的峰。

DEPT ¹³C NMR spectroscopy is an indispensable tool for structural elucidation in organic chemistry, providing enhanced sensitivity and resolution compared to traditional ¹³C NMR …

The aim of this article is to explain the application of DEPT in solving NMR spectra. As an example , let’s see this (stimulated) 13 C NMR combined with the DEPT experiments: Notice how the ppm values are retained but depending on the signals in DEPT we can tell if the carbon is a C, CH, CH 2 or a CH 3 group .

Key Points for 13C + DEPT Charting. The baseline of each spectrum must be clearly visible. Each carbon signal is unique, and their intensities (peak heights) are not the same. The intensity of...

无畸变增强极化转移技术（Distortionless Enhancement by Polarization Transfer，DEPT），大大提高对 13C 的观测灵敏度，利用异核间的偶合对 13C 信号进行调制的方法，来确定碳原子的类型。

2015年11月19日 · Distortionless Enhancement by Polarization Transfer (DEPT) is a double resonance pulse program that transfers polarization from an excited nucleus to another – most commonly 1H → 13C. This results in a sensitivity enhancement relative to the standard decoupled 1D carbon spectra (13C), which benefits only from the small Nuclear Overhauser ...

2022年8月30日 · 无畸变增强极化转移技术（Distortionless Enhancement by Polarization Transfer，DEPT），大大提高对13C 的观测灵敏度，利用异核间的偶合对13C 信号进行调制的方法，来确定碳原子的类型。

2024年7月10日 · Numerous techniques developed in recent years have made it possible to obtain enormous amounts of information from 13 C NMR spectra. Among these techniques is one called DEPT–NMR, for distortionless enhancement by polarization transfer, which makes it possible to distinguish between signals due to CH 3, CH 2, CH, and quaternary carbons. That ...