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利用程序控温的水热合成法得到了两种含有2,2′-bipy及[MoO3]簇骼的化合物:[(2,2′-bipy)2(MoO3)3]n(Ⅰ)和[(2,2′-bipy)(MoO3)]n(Ⅱ)。为了阐明这两个化合物结构与谱学的关系,通过XRD、FTIR、热微扰2D-IR相关光谱、TG分析、SEM、高温红外分析、UV-Vis DRS光谱和固体荧光光谱研究手段进行研究,进而探讨结构与性能的关系。其XRD说明了化合物Ⅰ和Ⅱ是纯物相;FTIR的特征振动频率和热微扰2D-IR相关光谱的响应峰与化合物Ⅰ和Ⅱ的结构解析相一致,2D-IR的同步和异步相关光谱图还确定了化合物Ⅰ和Ⅱ的钼氧簇骼振动强度随升温变化的先后顺序与高温红外解析相一致;通过TG分析和高温红外分析研究化合物Ⅰ和Ⅱ的热稳定性;化合物Ⅰ和Ⅱ的UV-Vis DRS光谱显示在225~350nm有宽的紫外吸收谱带;化合物Ⅰ和Ⅱ的固体荧光光谱分别在277和295nm的激发下得到的最强发射峰值分别为460和480nm。本文阐明了化合物Ⅰ和Ⅱ的配位情况,揭示了价电子在分子中相应能级间跃迁的内在规律;还验证了弱相互作用力在配合物的结构框架中不但起稳定作用,而且在耐热性扮演重要的角色。
Two compounds containing 2,2’-bipy and [MoO3] clusters were obtained by hydrothermal method with controlled temperature: [(2,2’-bipy) 2 (MoO3) 3] (2,2’-bipy) (MoO3)] n (II). In order to elucidate the relationship between the structures of these two compounds and their spectroscopy, the structures of the two compounds were studied by means of XRD, FTIR, thermal perturbation 2D-IR correlation spectroscopy, TG analysis, SEM, high temperature infrared analysis, UV-Vis DRS spectroscopy and solid fluorescence spectroscopy. Then explore the relationship between structure and performance. The XRD shows that compounds I and II are pure phases. The response frequencies of FTIR characteristic vibrational frequencies and thermal perturbation 2D-IR correlation spectra are consistent with those of compounds I and II. The synchronous and asynchronous correlation spectra of 2D-IR The figure also confirms that the vibrational intensities of the molybdenum-oxygen clusters of compound I and II are consistent with that of high-temperature infrared analysis. The thermal stability of compounds I and II is studied by TG analysis and high-temperature infrared analysis. The thermal stability of compounds I and II UV-Vis DRS spectra showed broad UV absorption bands at 225-350 nm. The strongest emission peaks of compounds I and II obtained at 277 and 295 nm were 460 and 480 nm, respectively. In this paper, we elucidate the complexation of compounds I and II, reveal the inherent rules of valence electron transitions between the corresponding energy levels in the molecule, and also verify that the weak interaction force not only plays a stabilizing role in the structural framework of the complex, Fever plays an important role.