Morphology of protonated methanol clusters: an infrared spectroscopic study of hydrogen bond networks of H+(CH3OH)n (n = 4-15).
Morphology of protonated methanol clusters: an infrared spectroscopic study of hydrogen bond networks of H+(CH3OH)n (n = 4-15).
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DOI：
10.1021/jp0463464
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发表时间：
2005-01
期刊：
影响因子：
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通讯作者：
A. Fujii;S. Enomoto;M. Miyazaki;N. Mikami
中科院分区：
文献类型：
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作者：
A. Fujii;S. Enomoto;M. Miyazaki;N. Mikami
用红外光谱研究了大尺寸质子化甲醇团簇H(+)(MeOH)(n=4-15)的氢键网络随团簇尺寸n的变化，自由OH伸缩模式的谱带强度随n的增大而减小，在n=7时最终消失。另一方面，氢键伸展产生的宽吸收带随团簇尺寸的增大而显著移动，最终集中在3300 cm(-1)处；红外光谱的尺寸依赖关系从形态上解释为团簇的双环氢键结构的形成。
Infrared spectroscopy of large-sized protonated methanol clusters, H(+)(MeOH)(n) (n = 4-15), was carried out in the OH stretch region to characterize the development of the hydrogen bond network with the cluster size, n. The band intensity of the free OH stretching mode decreased with n, and the band finally disappeared at n = 7. On the other hand, the broad absorption band due to hydrogen-bonded OH stretches exhibited a remarkable shift with the cluster size, and it finally converged on 3300 cm(-1) for n >/= approximately 10. The size dependence of the infrared spectra was morphologically interpreted in terms of the formation of the bicyclic hydrogen-bonded structure of the clusters.