A new non-centrosymmetric Chlorobismuthate(III) hybrid material: Crystal structure, optical properties and antibacterial study

Synthesis and photoluminescence of three bismuth(iii)-organic compounds bearing heterocyclic N-donor ligands

“…above 400 nm) correspond to excitation out of BiCl 3 centered orbitals to the π* orbitals of the closest phen group (HOMO−2 → LUMO in the linear trimer; HOMO−1 → LUMO+5, LUMO+6, and LUMO+7 in the tetramer). The other bands (below 400 nm) are a combi- nation of MLCT as expected for such types of compounds, and are in agreement with the recent work by Sorg et al 17 or Ouerghi et al 70 Interestingly, the experimentally determined excitation wavelength used to collect the emission spectra is 415 nm, which agrees well with the lowest absorption energy predicted with the highest intensity in the low part of the spectrum (Fig. 10b) for a singlet to singlet excitation.…”

Structural, vibrational, optical properties and theoretical studies of a new organic-inorganic material: Tris-acetoguanaminium hexachlorobismuthate monohydrate

“…The bismuth (III) atom is bounded to six chlorine atoms; the coordination geometry is distorted octahedral, as it can be deduced from the value of both the Bi-Cl bond lengths, ranging from 2.5709(15) to 2.8602(4) Å, and the Cl-Bi-Cl angles, ranging from 86.65(5)° to 95.78 (6)° for cis arrangements and from 173.79(5)° to 176.06(5)° for trans arrangements (Table 2). The structural parameters of the present compound agree well with those found in similar compounds characterized by [BiCl 6 ] 3octahedral units [25][26][27][28][29]. The calculated average values of the Baur distortion indices [30] corresponding to the different angles and distances in the [BiCl 6 ] 3entities are ID (Bi-Cl)=0.0067 and ID(Cl-Bi-Cl)=0.000052.…”

“…The decomposition of the three cations is confirmed by 47.2 % weight loss observed in the TGA curve, which is close to the calculated value of 46% [61][62]. Besides, the weight loss observed in the temperature range from 400 to 625 °C corresponds to the release of the rest of the compound, in particular volatile substances such as Cl 2 molecules [25]. The fact that the final residue is very small is also confirmed by the weighing of the mass of the solid residue that we removed from the alumina crucible after performing the treatment.…”

Crystal structure, spectroscopic measurement, optical properties, thermal studies and biological activities of a new hybrid material containing iodide anions of bismuth(iii)

“…Using precedent works reported in the literature on similar compounds. 32,[77][78][79][80] The DSC thermogram shows a dehydration peak at 125 C, starting at 70 C and ending at 150 C, (observed weight loss, 2%; calculated weight loss, 2.09%), attributed to the elimination of the water molecules. Aer dehydratation, the DSC curve shows two endothermic peaks, the rst peak at 233 C corresponds to the organic cation degradation, the second one at 253 C which more intense is attributed to the release of diiodine molecule (I 2 ).…”