Abstract
A novel compound, (4,4′-Hbpy) 2(K 2Mo 8O 26) 1 (bpy = bipydine), was synthesized by hydrothermal method and characterized by X-ray single analysis, thermalgravimetric analysis, one-dimensional (1D) infrared spectroscopy and two-dimensional (2D) correlation infrared spectroscopy under thermal perturbation. In the compound 1, the [Mo 8O 26] units link to potassium ions to form layer structure, and the protonated 4,4′-bpy are linked to chains by hydrogen bonds. The 2D IR correlation spectroscopy study indicates that the intensity changes of Mo O, N H and C C stretching vibration are sensitive to the temperature variation, and the intensity changes of asymmetry stretching vibration of the terminal Mo O occur prior to that of terminal Mo O linked by K atom. At the same time, the peaks of asymmetry stretching vibrations of the terminal Mo O and the stretching vibrations of N H split into two peaks respectively in 2D IR correlation spectroscopy.
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