An infrared spectroscopy correlation table (or table of infrared absorption frequencies) is a list of absorption peaks and frequencies, typically reported in wavenumber, for common types of molecular bonds and functional groups. [1][2] In physical and analytical chemistry, infrared spectroscopy (IR spectroscopy) is a technique used to identify c...

如表中橙色所示，3332附近一个巨大的包峰，这个就是-OH特有的特征峰，峰形奇特出峰位置也比较特殊，基本都用于辨认-OH的存在。 如表中黄色所示，1050-1100附近的出峰一般为C-O单键的出峰，这个也是一个特征峰，但是由于含有C-O键的物质较多，一般只能确认一个大类的类型无法像-OH键的3300左右的峰那么特征。 聚乙二醇 （C-O-C） 从聚乙二醇的结构上可以看出，其中除了亚甲之外，就只有上面刚说过的-OH以及C-O键，在这个结构中的C-O键更准确的说应该是 …

2023年5月3日 · In this paper, the theoretical characteristics of infrared spectra of phenols and alcohols have been simulated and analyzed using the Gaussian 16 series of programs. Four infrared spectral analysis techniques, in situ infrared, KBr pellet press, dry KBr pellet press, and paste methods, have been used to detect the infrared spectra of coal.

2007年11月15日 · The developed spectral classification describes OH IR absorption in olivine using three major characteristics: (1) the type of Group 1 OH IR absorption bands (Type A, B or C, indicative of the pressure of hydrogenation); (2) the relative proportion of Group 2 OH IR absorption bands (allowing to make inferences on aSiO 2) and (3) the absolute ...

2020年10月28日 · Here we report the well-resolved infrared (IR) spectra of confinement-free, neutral water octamer based on threshold photoionization using a tunable vacuum ultraviolet free electron laser (VUV-FEL).

2021年12月16日 · The broad shape of the absorption band results from the hydrogen bonding of the OH groups between molecules. The OH bond of alcohol group usually has absorption in the range of 3200-3600 cm-1, while the OH bond of carboxylic acid group occurs at about 2500-3300 cm-1 (Figure 6.4a and Figure 6.4c).

3 天之前 · Stretching vibrations of H 2 O (l) and D 2 O (l) observed for the first time in nano-FTIR spectroscopy. Detailed comparison of the water stretching bands in nano FTIR absorption and phase spectra with conventional ATR spectra.

High resolution (0.04cm−1) FT-IR absorption spectroscopy was applied in the range 9-300 K to study vibrational modes of OH− in KCl: Sr2+ mixture. The lines (very narrow at 9 K) in the range 3500–3650 cm−1 were attributed to the stretching of...

2022年5月31日 · The FTIR spectra confirmed the formation of the hydrogen bonds and it was found that there exist different states of water based on various strengths of hydrogen bonds. The OH stretching bands indicated the fraction of strongly bound water decreases with …

1988年5月1日 · 摘要 在氧化铝、氧化锆、氧化镁和氧化钍样品上观察到由氢键表面羟基的面内弯曲模式引起的谱带。 他们的分配是基于抽真空加热脱水和使用 D 2 O 和 H 2 O 18 进行同位素交换的效果。 观察到的频率显然与样品截止极限的位置有关，表明 δOH 模式与 ν (M OH) 模式耦合。 摘要 在氧化铝、氧化锆、氧化镁和氧化钍样品上观察到由氢键表面羟基的面内弯曲模式引起的谱带。 他们的分配是基于抽真空加热脱水和使用 D 2 O 和 H 2 O 18 进行同位素交换的效果。 观 …