1D-Bromobismuthates of Dipyridinoalkane Derivatives

Bromobismuthates of 1,1'-(1,N-Alkanediyl)bis(picolines): Synthesis, Thermal Stability, Crystal Structures, and Optical Properties

“…An unusual linear anionic agglomerate [(BiBr 6 )•••(BiBr 5 )•••(BiBr 6 )] 8is observed in the structure of 1,1'-(1,4-phenylenebis(methylene))bis(3-methylpyridin-1-ium) bromobismuthate. The high values of E g for this compound [12] and the compounds with the zigzag polymeric anion [11] are consistent with the conclusion that only the presence of a linear anionic chain in the compound is the condition for decreasing the optical band gap of the semiconductor. Bromobismuthates, iodobismuthates, and mixed bromoiodobismuthates of the single-charge picoline derivatives are known [13][14][15].…”

“…Hybrid bromobismuthates of N-substituted 2-and 3-picolines contain various anions, namely, [BiBr 6 ] 3-, [Bi 2 Br 9 ] 3-, and [Bi 2 Br 10 ] 4-. We have also found previously the and [Bi 2 Br 11 ] 5anions in the structures of bromobismuthates of N-substituted 2-and 4-bromopicolines [10,11]. Thus, we cannot predict the possible composition and structure of the anionic moiety of bromobismuthates in the series of N-substituted picolines even for the same initial stoichiometric ratio of the reagents (doubly charged organic cation : bismuth).…”

“…The optical band gap for this compound was 1.73 eV [9]. Isolated anions [Bi 2 Br 10 ] 4-, [Bi 2 Br 11 ] 5-, and [BiBr 6 ] 3- [10], as well as the zigzag polymeric anion [11], were found in the structures of the obtained bromobismuthates of the picoline derivatives. An unusual linear anionic agglomerate [(BiBr 6 )•••(BiBr 5 )•••(BiBr 6 )] 8is observed in the structure of 1,1'-(1,4-phenylenebis(methylene))bis(3-methylpyridin-1-ium) bromobismuthate.…”

“…Among the readily formed hybrid halobismuthates, one can find compounds with low values of the optical band gap (E g < 1.8 eV) [5][6][7][8][9]. Among the latter, mixed methyl viologen chloroiodobismuthate [7] and methyl viologen iodobismuthate [8] contain linear 1D chains When searching for the compounds with linear polymeric anions, we synthesized several bromo-and iodobismuthates of N-substituted picolines [9][10][11][12]. The linear anion we are interested in was found in the structure of iodobismuthate of the 4-methylpyridine derivative.…”

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

“…Interest in the chemistry of halide complexes of p-elements is largely due to the variety of their structural types [1]. For example, halogen bismuthate anions can have molecular structure with a nuclearity from 1 to 8 [2][3][4][5][6][7][8][9][10][11]. A large number of complexes with polymer anions are also known, usually one-dimensional [12][13][14][15][16][17][18][19]; examples of two-dimensional anions are extremely rare [20].…”