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A Keggin-type polyoxomolybdate[H_2biim]{Ni(biim)_3(SiMO_(12)O_(40))}[biim =1H,1’H-[2,2’]biimidazolyl]has been synthesized under hydrothermal condition and characterized by XRD,temperature-dependent IR,TG,temperature-induced and magnetism-induced 2D infrared correlation spectroscopy(2D-IR COS)and UV-vis DRS in order to explore the relationship between structure and properties.Temperatureinduced 2D-IR COS spectroscopy indicates that the terminal Mo-O_(μ/υ) bonds are more sensitive than the bridging Mo=O_t,bands to temperature variation,which is in agreement with the conclusion of temperature-dependent IR.Magnetism-dependent 2D-IR COS spectroscopy reveals the stretching vibration of the Mo=O_t,occurs prior to the stretching vibration of the Mo-O_(μ/υ),which is due to the coordination environment and the valence of the Si atom.The stability of compound 1 is investigated via TG and temperature-dependent IR.In RhB degradation,compound 1 shows good photocatalytic abilities.
A Keggin-type polyoxomolybdate [H_2biim] {Ni (biim) _3 (SiMO_ (12) O_ (40))} [biim = 1H, 1’H- [2,2 ’] biimidazolyl] has been synthesized under hydrothermal conditions in by XRD, temperature-dependent IR, TG, temperature-induced and magnetism-induced 2D infrared correlation spectroscopy (2D-IR COS) and UV-vis DRS in order to explore the relationship between structure and properties.Temperatureinduced 2D- that the terminal Mo-O_ (μ / υ) bonds are more sensitive than the bridging Mo = O_t, bands to temperature variation, which is in agreement with the conclusion of temperature-dependent IR.Magnetism-dependent 2D-IR COS spectroscopy reveals the stretching vibration of the Mo = O_t, occurs prior to the stretching vibration of the Mo-O_ (μ / υ), which is due to the coordination environment and the valence of the Si atom. temperature-dependent IR.In RhB degradation, compound 1 shows good photocatalytic abilities.