Halobismuthates with bis(pyridinium)alkane cations: Correlations in crystal structures and optical properties

A series of four chloro- and bromobismuthates with bis(pyridinium)alkane cations (Py(CH2)nPy)2+(Cn) and (4-PyH)(CH2)n(4-PyH)2+(H2Cn) were synthesized and characterized. Analysis of their crystal structures, as well as previously reported data, results in establishment of correlations between the type of halobismuthate anion and the nature of cation. Luminescent properties of obtained compounds are reported and discussed.