IR and Raman measurements were carried out for GaCl₃-formamide (FA) solutions, and comparisons with the Al³⁺ and Fe³⁺ chemistry are presented. Upshifts of both ν_CO and ν_CN modes of FA are observed, and analyses of the corresponding bands suggest different types of solvatocomplexes. The twisting mode (γ_HNH) of FA at 1190 cm⁻¹, which is IR- and Raman-inactive, is activated only in the former upon coordination to high electrostatic potential ions. The spectral behavior exhibited in this region is shown for the first time in the literature and has helped in the understanding of the coordinated FA structure. The catalytic power of Ga³⁺ towards amide bond hydrolysis is also predicted for the first time using vibrational spectroscopy and may be useful for biological studies.

中文翻译：

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简单酰胺在溶液中的新振动信息：以GaCl3-甲酰胺络合物为例

对GaCl _3-甲酰胺（FA）溶液进行了IR和拉曼测量，并与Al ³⁺和Fe ³⁺化学性质进行了比较。两者的挂高档ν _CO和ν _CN观察到FA的模式，以及相应的频带的分析表明不同类型的solvatocomplexes。扭转模式（γ _HNH）FA中的1190厘米^-1红外和拉曼不活泼的，只有在与高静电势离子配位时才被激活。在该区域中展示的光谱行为在文献中首次显示出来，并有助于理解协调的FA结构。还首次使用振动光谱法预测了Ga ³⁺对酰胺键水解的催化能力，这可能对生物学研究有用。