TY - JOUR
T1 - Association structures of N-methylacetamide in solution studied by infrared electroabsorption spectroscopy
AU - Hiramatsu, Hirotsugu
AU - Hamaguchi, Hiro
PY - 2002/8/6
Y1 - 2002/8/6
N2 - Aggregated structures of N-methylacetamide in 1,4-dioxane solution have been studied using infrared electro-absorption spectroscopy. Predominance of two structures, the monomer and dimer, is demonstrated. For the monomer, angles α between the permanent dipole moment and the transition dipole moments are determined to be 6° ± 9° for the amide A, 0° ± 13° for the amide I, 62° ± 4° for the amide II modes, respectively. For the dimer, the experimental results are explained very well by assuming a head-to-tail structure, which has the permanent dipole moment twice as large as that of the monomer and similar α values as those of the monomer.
AB - Aggregated structures of N-methylacetamide in 1,4-dioxane solution have been studied using infrared electro-absorption spectroscopy. Predominance of two structures, the monomer and dimer, is demonstrated. For the monomer, angles α between the permanent dipole moment and the transition dipole moments are determined to be 6° ± 9° for the amide A, 0° ± 13° for the amide I, 62° ± 4° for the amide II modes, respectively. For the dimer, the experimental results are explained very well by assuming a head-to-tail structure, which has the permanent dipole moment twice as large as that of the monomer and similar α values as those of the monomer.
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U2 - 10.1016/S0009-2614(02)00917-X
DO - 10.1016/S0009-2614(02)00917-X
M3 - Article
AN - SCOPUS:0037031323
SN - 0009-2614
VL - 361
SP - 457
EP - 464
JO - Chemical Physics Letters
JF - Chemical Physics Letters
IS - 5-6
ER -