Unexpectable Hydrolytic Transformation of New Type Hybrid Bromobismuthates with Methylpyrazinium Dicationsстатья
Статья опубликована в высокорейтинговом журнале
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Дата последнего поиска статьи во внешних источниках: 10 июля 2019 г.
Аннотация:A series of new type hybrid bromobismuthates formed by various pyrazinium cations were isolated and studied. In the systems initially containing iodide-anions and monocations of substituted pyrazines, the complexes on the base of doubly-charged cations of substituted pyrazines instead of ones based on corresponding monocations were surprisingly formed. The variation of substituted pyrazinium cation affects not only the crystal structures of hybrid bromobismuthates via tuning the nuclearity of the anions but also the hydrolytic stability of the compounds. Thorough structural study of hydrolytic transformations was performed for halobismuthates for the first time. The results revealed stepwise course of the process affording several products. Spectral studies of complexes evidence that the values of optical band gaps (Eg) are low in comparison with similar systems which is most likely due to the cooperative effect involving the nature of the corresponding cations together with features of the supramolecular structure of complexes.