Bismuth(III) Iodide Complexes with 1-Ethyl-4-Dimethylaminopyridinium: Structure, Thermal Stability, and Optical Properties

Usoltsev, Andrey N.; Shentseva, I. A.; Shayapov, V. R.; Plyusnin, P. E.; Korolkov, Ilya V.; Sokolov, Maxim N.; Adonin, Sergey A.

doi:10.1134/s0036023621100193

Cited by 6 publications

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References 51 publications

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“…In hybrid iodobismuthates, the Bi 3+ cation usually adopts a distorted octahedral coordination, with BiI 6 octahedra linked by vertex-, edge-or face-sharing into polynuclear anions [11][12][13][14][15][16]. A variety of polymeric, discrete polynuclear and mononuclear anionic units have been described previously [17].…”

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confidence: 99%

Synthesis and Characterisation of Iodobismuthates Containing N-substituted 1,4-Diazabicyclo[2.2.2]octane

2022

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Two new hybrid iodobismuthates, [C8H17N2][C10H22N2][BiI6] (1) and [C6H12N2]0.5[C10H22N2]3.5[Bi2I10][Bi2I9] (2), have been prepared by solvothermal synthesis in the presence of 1,4-diazabicyclo[2.2.2]octane (DABCO) and ethanol. Both compounds have been characterized by single-crystal and powder X-ray diffraction, infrared and UV–Vis spectroscopies and thermogravimetric analysis. Structure determination reveals that the crystal structure of 1 contains mononuclear [BiI6]3− anions, whilst 2 contains an unusual combination of dinuclear anions, [Bi2I9]3− and [Bi2I10]4−, consisting of two edge- and two face-sharing [BiI6]3− octahedra, respectively. Mono- and diethylated derivatives of DABCO, which are formed in situ under solvothermal conditions, act as countercations and are located between the discrete anions. The optical band gaps of 1 and 2, which are 2.29(1) and 2.03(2) eV respectively, are consistent with the red color of these compounds, and are comparable to the band gaps measured for other iodobismuthates containing discrete anions. Graphical Abstract Two new iodobismuthates, [C8H17N2][C10H22N2][BiI6] (1) and [C6H12N2]0.5[C10H22N2]3.5[Bi2I10][Bi2I9] (2), have been synthesized under solvothermal conditions, and their crystal structures determined by single-crystal X-ray diffraction.

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