Fermi resonance at the P=O group frequency in the IR spectrum of ethyl ethylphosphonite

1989 ◽  
Vol 51 (1) ◽  
pp. 690-692 ◽  
Author(s):  
L. Kh. Ashrafullina ◽  
N. I. Monakhova ◽  
R. R. Shagidullin
Keyword(s):  
Ir Spectrum ◽  
Fermi Resonance ◽  
Group Frequency

Two-dimensional IR spectroscopy reveals a hidden Fermi resonance band in the azido stretch spectrum of β-azidoalanine

2020 ◽  
Vol 22 (34) ◽  
pp. 19223-19229
Author(s):  
Jun Young Park ◽  
Hyeok-Jun Kwon ◽  
Saptarsi Mondal ◽  
Hogyu Han ◽  
Kyungwon Kwak ◽  
...  
Keyword(s):  
Ir Spectroscopy ◽  
Ir Spectrum ◽  
Resonance Peak ◽  
Cross Peak ◽  
Fermi Resonance ◽  
Two Dimensional ◽  
2D Ir ◽  
Resonance Band

The 2D-IR spectrum of Ala-N3 shows cross-peak, but cannot be identified clearly. The 1D slice spectra obtained from 2D-IR spectrum reveals the presence of hidden Fermi resonance peak.

Fermi resonance at the P=O group frequency

1977 ◽  
Vol 26 (9) ◽  
pp. 1841-1844
Author(s):  
D. F. Fazliev ◽  
R. R. Shagidullin ◽  
L. Kh. Ashrafullina
Keyword(s):  
Fermi Resonance ◽  
Group Frequency

THE JET-COOLED HIGH-RESOLUTION IR SPECTRUM OF FORMIC ACID CYCLIC DIMER

2017 ◽  
Author(s):  
Manuel Goubet ◽  
Robert Georges ◽  
P. Roy ◽  
Atef Jabri ◽  
Pascale Soulard ◽  
...  
Keyword(s):  
High Resolution ◽  
Formic Acid ◽  
Ir Spectrum ◽  
Cyclic Dimer

Sulfonyl isocyanides RSO2NC

2017 ◽  
Author(s):  
Curt Wentrup ◽  
Horst Briehl
Keyword(s):  
Ir Spectrum ◽  
Reaction Conditions ◽  
Flash Vacuum Pyrolysis ◽  
Vacuum Pyrolysis

Flash vacuum pyrolysis (FVP) of 5-azido-1-aryltetrazoles results in triple N<sub>2</sub> elimination and formation of aryl isocyanides RNC, which rearrange in part to aroylnitriles RCN under the reaction conditions. Similar FVP of 5-azido-1-arenesulfonyltetrazoles generates a compound absorbing in the IR spectrum (77 K) at 2090 cm<sup>-1 </sup>and assigned the structure of arenesulfonyl isocyanide, ArSO<sub>2</sub>NC <b>11</b>. FVP at temperatures above 600 <sup>o</sup>C results in progressively more nitrile ArSO<sub>2</sub>CN <b>12</b>. Compound <b>11</b> also disappears on warming above -80 <sup>o</sup>C

Sulfonyl isocyanides RSO2NC

2017 ◽  
Author(s):  
Curt Wentrup ◽  
Horst Briehl
Keyword(s):  
Ir Spectrum ◽  
Reaction Conditions ◽  
Flash Vacuum Pyrolysis ◽  
Vacuum Pyrolysis

Flash vacuum pyrolysis (FVP) of 5-azido-1-aryltetrazoles results in triple N<sub>2</sub> elimination and formation of aryl isocyanides RNC, which rearrange in part to aroylnitriles RCN under the reaction conditions. Similar FVP of 5-azido-1-arenesulfonyltetrazoles generates a compound absorbing in the IR spectrum (77 K) at 2090 cm<sup>-1 </sup>and assigned the structure of arenesulfonyl isocyanide, ArSO<sub>2</sub>NC <b>11</b>. FVP at temperatures above 600 <sup>o</sup>C results in progressively more nitrile ArSO<sub>2</sub>CN <b>12</b>. Compound <b>11</b> also disappears on warming above -80 <sup>o</sup>C

Synthesis of the semi-rigid analogues of prothiadene and dithiadene as potential antidepressant and antihistamine agents: 11-[2-(Dimethylaminomethyl)cyclohexylidene]-6,11-dihydrodibenzo[b,e]thiepins and 4-[2-(dimethylaminomethyl)cyclohexylidene]-4,9-dihydrothieno-[2,3-c]-2-benzothiepins

1985 ◽  
Vol 50 (5) ◽  
pp. 1078-1088 ◽  
Author(s):  
Zdeněk Polívka ◽  
Jiří Holubek ◽  
Emil Svátek ◽  
Jan Metyš ◽  
Miroslav Protiva
Keyword(s):  
Hydrochloric Acid ◽  
Ir Spectrum ◽  
Title Compound ◽  
Dilute Hydrochloric Acid ◽  
Amino Alcohols ◽  
Geometric Isomers ◽  
Pharmacological Testing

Reaction of dibenzo[b,e]thiepin-11(6H)-one with 2-(dimethylaminomethyl)cyclohexylmagnesium chloride gave a mixture of stereoisomeric amino alcohols IX from which four homogeneous bases (IXa to IXd) were separated by chromatography. Dehydration of these compounds with boiling dilute hydrochloric acid afforded mixtures of racemic geometric isomers of the title compound VII, which were separated by crystallization. To the prevailing less polar base VIIa (E)-configuration was assigned on the basis of the IR spectrum. Using a similar procedure, thieno[2,3-c]-2-benzothiepin-4(9H)-one gave mixture of amino alcohols X from which three homogeneous stereoisomers X-A to X-C were isolated. Their dehydration resulted in both expected racemic geometric isomers VIII-A and VIII-B. Pharmacological testing proved the character of an antidepressant for the semi-rigid analogue of dithiadene VIII.

Anharmonic Coupling Revealed by the Vibrational Spectra of Solvated Protonated Methanol: Fermi Resonance, Combination Bands, and Isotope Effect

2021 ◽  
Vol 125 (9) ◽  
pp. 1910-1918
Author(s):  
Chih-Kai Lin ◽  
Qian-Rui Huang ◽  
Ying-Cheng Li ◽  
Ha-Quyen Nguyen ◽  
Jer-Lai Kuo ◽  
...  
Keyword(s):  
Isotope Effect ◽  
Vibrational Spectra ◽  
Fermi Resonance ◽  
Anharmonic Coupling ◽  
Combination Bands

scholarly journals Research on FT-IR spectrum data mining of diesel engine lubricating oil

2021 ◽  
Vol 1883 (1) ◽  
pp. 012121
Author(s):  
Jing Li ◽  
Hongxiang Tian ◽  
Tingfeng Ming ◽  
Yunling Sun ◽  
Shuai Zhang
Keyword(s):  
Data Mining ◽  
Diesel Engine ◽  
Ir Spectrum ◽  
Lubricating Oil ◽  
Ft Ir ◽  
Spectrum Data
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