𝔖 Bobbio Scriptorium
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The origin of group frequency shifts—I: Abnormal frequencies in multiple bonds

✍ Scribed by L.J Bellamy

Publisher
Elsevier Science
Year
1958
Weight
712 KB
Volume
13
Category
Article
ISSN
0371-1951

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Electrostatic origin of the cooperative
Electrostatic origin of the cooperative effect on the CO bond lengths and the amide I vibrational frequencies of the N-methylacetamide oligomers
✍ Hajime Torii 📂 Article 📅 2005 🏛 Elsevier Science 🌐 English ⚖ 169 KB

The electric fields operating among the molecules in the oligomers of N-methylacetamide are analyzed to see the reasons for the cooperative effect on the CaO bond lengths and the diagonal force constants in the vibrational subspace of the amide I mode. It is suggested that the following three factor