Influence of cations on optical properties of iodobismuthates

Influence of interaction between organic cation and inorganic unit in bi-based hybrid perovskites for photoelectronic properties

“…For example, the reason why Bi-based materials have low photoelectric efficiency is still not clearly explanted [ 2 ]. To answer this question, some researchers embarked on exploring the structure of anions or cations to study the influence of anions with different configurations on their photoelectric properties, such as single or double chains [ 3 ], zigzag chains [ 4 ], ring-contained chains [ 5 ], spiral chains [ 6 ], etc [ 7 ]. Hamdeh revealed that in hybrid materials, the cation size mismatch had no discernible impact on the band gap.…”

New phosphonium bromobismuthate as selective catalytic reagent in the heterocyclization reactions

“…[42][43][44][45] The molecular structure of bromobismuthate anion, [Bi 2 Br 9 ] 3À is well-known. [39] The Bi-Br interatomic S5. The bistriphenylphosphonium dication and bromobismuthate anion are linked together by several C HÁÁÁBr hydrogen bonds with HÁÁÁBr distances ranging from 2.934 to 3.045 Å (Figure 3).…”

“…In recent years, the chemistry of hybrid halobismuthate salts has attracted growing attention in preparation of advanced materials with variety of useful properties, such as nonlinear optical (NLO), ferroelectricity, piezoelectricity, semiconductivity, photochromism, and luminescence. [37][38][39][40][41] Investigation of the crystal structures of hybrid halobismuthates showed that bismuth center typically formed hexahalide coordination sphere as polybismuthate species arising from corner, edge, or facesharing BiX 6 distorted octahedra. However, there are a great number of halobismuthates hybrids reported to date with various cations; only in a few cases, phosphonium cations were systematically analyzed.…”

Unusual isostructural Br/I substitution effect on the crystal structure and optical properties of hybrid halobismuthates

“…Hybrid halobismuthates attract the attention of researchers because they are easy to obtain and have low toxicity compared to other representatives of hybrid halometallates. Halobismuthates possess a number of useful physical and chemical properties such as ferroelectricity, [1][2][3][4][5] photochromism, [6][7][8] thermochromism, [9][10][11] luminescence, [12][13][14] and semiconductivity, 15 which makes them convenient model compounds for studying the structure-property relationship in hybrid halometallate compounds.…”

“…The resulting colored pecipitates were filtered in vacuo, washed with ethanol, and dried in air. The yields of the products ranged from 28% (5) to 68% (10). Bold numbers indicate the compounds where the crystal structure was determined.…”