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20页PPT让你完全搞懂红外光谱官能团识别!

  • 2026-04-10 05:28:59
20页PPT让你完全搞懂红外光谱官能团识别!

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红外光谱是有机结构鉴定的核心手段，特征区（4000-1330 cm⁻¹）是基团鉴定核心区域，指纹区（1330-400 cm⁻¹）则用于区分结构相似化合物。红外光谱的特征区（4000-1330 cm⁻¹）主要对应于X-H（如O-H、N-H、C-H）及三键、双键等官能团的伸缩振动，这些振动频率受分子环境影响较小，具有明显的特征性，因此是鉴别化合物含有什么官能团的核心依据。如何快速识别红外光谱中官能团，请各位看官老爷们跟着PPT一起往下看。
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  1. CONNECT:[ UseTime:0.000524s ] mysql:host=127.0.0.1;port=3306;dbname=h_sjds;charset=utf8mb4
  2. SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.001013s ]
  3. SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.000371s ]
  4. SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.000265s ]
  5. SHOW FULL COLUMNS FROM `set` [ RunTime:0.000498s ]
  6. SELECT * FROM `set` [ RunTime:0.000186s ]
  7. SHOW FULL COLUMNS FROM `article` [ RunTime:0.000581s ]
  8. SELECT * FROM `article` WHERE `id` = 487280 LIMIT 1 [ RunTime:0.000411s ]
  9. UPDATE `article` SET `lasttime` = 1776870235 WHERE `id` = 487280 [ RunTime:0.002060s ]
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0.077410s