DFT-Calculated IR Spectrum Amide I, II, and III Band Contributions of N-Methylacetamide Fine Components | Zendy

Yan Ji | Zendy; Xiaoliang Yang | Zendy; Zhi Ji | Zendy; Linhui Zhu | Zendy; Nana Ma | Zendy; Dejun Chen | Zendy; Xianbin Jia | Zendy; Junming Tang | Zendy; Yilin Cao | Zendy

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DFT-Calculated IR Spectrum Amide I, II, and III Band Contributions of N-Methylacetamide Fine Components

Author(s) -

Yan Ji,

Xiaoliang Yang,

Zhi Ji,

Linhui Zhu,

Nana Ma,

Dejun Chen,

Xianbin Jia,

Junming Tang,

Yilin Cao

Publication year - 2020

Publication title -

acs omega

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.779

H-Index - 40

ISSN - 2470-1343

DOI - 10.1021/acsomega.9b04421

Subject(s) - amide , chemistry , infrared , infrared spectroscopy , protonation , quantum chemistry , density functional theory , nuclear magnetic resonance , crystallography , analytical chemistry (journal) , computational chemistry , molecule , organic chemistry , physics , ion , optics , supramolecular chemistry

The infrared spectrum (IR) characteristic peaks of amide I, amide II, and amide III bands are marked as amide or peptide characteristic peaks. Through the nuclear magnetic resonance study, N -methylacetamide has been determined to have six fine components, which include protonation, hydration, and hydroxy structures. Then the independent IR spectrum of every component in N -methylacetamide is calculated by using the density functional theory quantum chemistry method, and the contribution of each component to amide I, II, and III bands is analyzed. The results of this research can help to explain the formation of the amide infrared spectrum, which has positive significance in organic chemistry, analytical chemistry, and chemical biology.

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