{alpha}- to {beta}-[C{sub 6}H{sub 4}(NH{sub 3}){sub 2}]{sub 2}Bi{sub 2}I{sub 10} reversible solid-state transition, thermochromic and optical studies in the p-phenylenediamine-based iodobismuthate(III) material

Journal Article · Thu Dec 15 00:00:00 EST 2011 · Journal of Solid State Chemistry

DOI:https://doi.org/10.1016/j.jssc.2011.10.004· OSTI ID:21612837

Hrizi, Chakib ^[1]; Trigui, Ameni; Abid, Younes ^[2]; Chniba-Boudjada, Nassira; Bordet, Pierre ^[3]; Chaabouni, Slaheddine ^[1]

---

1. Laboratoire des Sciences de Materiaux et de l'Environnement (MESLab), Faculte des Sciences de Sfax (FSS), Universite de Sfax, Route de Soukra km 3,5-BP 1171, 3018 Sfax (Tunisia)
2. Laboratoire de Physique Appliquee, Faculte des sciences de Sfax, Universite de Sfax, BP 1171, 3018 Sfax (Tunisia)
3. Laboratoire de Cristallographie, CNRS, 25 avenue des Martyrs, BP 166, 3804 Grenoble Cedex 9 (France)

{alpha}-[C{sub 6}H{sub 4}(NH{sub 3}){sub 2}]{sub 2}Bi{sub 2}I{sub 10}, which is a new material containing low-dimensional iodobismuthate anions, was synthesized and through its single crystal X-ray diffraction measurements, was proven to crystallize at room temperature in the centrosymmetric space group P2{sub 1}/c. It consists of a p-phenylenediammonium dication and a discrete (0-D) anion built up of edge-sharing bioctahedron. Due to the hydrogen bonds and the interatomic distances (Bi-I, I Midline-Horizontal-Ellipsis I and {pi}-{pi}) changes, {alpha}-phase was transformed into the corresponding centrosymmetric {beta}-phase, {beta}-[C{sub 6}H{sub 4}(NH{sub 3}){sub 2}]{sub 2}Bi{sub 2}I{sub 10}, through a single-crystal to single-crystal transformation occurring upon cooling to -28/-26 Degree-Sign C. Below the transition temperature, {beta}-[C{sub 6}H{sub 4}(NH{sub 3}){sub 2}]{sub 2}Bi{sub 2}I{sub 10} crystallizes in the monoclinic system, centrosymmetric space group P2{sub 1}/n. Besides, the optical transmission measurements on {alpha}-[C{sub 6}H{sub 4}(NH{sub 3}){sub 2}]{sub 2}Bi{sub 2}I{sub 10} thin films have revealed two absorption bands at 2.47 and 3.01 eV. Finally, two room temperature photoluminescence emissions attributed to excitons radiative recombinations confined within the bioctahedra Bi{sub 2}I{sub 10}{sup 4-}, were observed in the red spectral range at 1.9 and 2.05 eV energy. - Graphical abstract: The structure of {alpha}-[C{sub 6}H{sub 4}(NH{sub 3}){sub 2}]{sub 2}Bi{sub 2}I{sub 10} consists of p-phenylenediammonium dications and dimeric decaiododibismuthate tetraanions stacked in a chessboard fashion. The optical properties were investigated by optical absorption and photoluminescence measurements. Highlights: Black-Right-Pointing-Pointer {alpha}-[C{sub 6}H{sub 4}(NH{sub 3}){sub 2}]{sub 2}Bi{sub 2}I{sub 10} is a new material containing low-dimensional iodobismuthate anions. Black-Right-Pointing-Pointer Below -35 Degree-Sign C {alpha}-phase undergoes a phase transformation leading to {beta}-phase, {beta}-[C{sub 6}H{sub 4}(NH{sub 3}){sub 2}]{sub 2}Bi{sub 2}I{sub 10}. Black-Right-Pointing-Pointer Optical transmission measurements on thin films revealed two absorption bands at 2.47 and 3.01 eV. Black-Right-Pointing-Pointer Photoluminescence measurements showed two luminescence bands at 1.9 and 2.05 eV.

• OSTI ID: 21612837
• Journal Information: Journal of Solid State Chemistry, Vol. 184, Issue 12; Other Information: DOI: 10.1016/j.jssc.2011.10.004; PII: S0022-4596(11)00532-9; Copyright (c) 2011 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA); ISSN 0022-4596
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
ABSORPTION
AMMONIA
ANIONS
EXCITONS
INTERATOMIC DISTANCES
MONOCLINIC LATTICES
MONOCRYSTALS
OPTICAL PROPERTIES
PHASE TRANSFORMATIONS
PHOTOLUMINESCENCE
RECOMBINATION
SOLIDS
SPACE GROUPS
TEMPERATURE RANGE 0273-0400 K
THIN FILMS
TRANSFORMATIONS
TRANSITION TEMPERATURE
TRANSMISSION
X-RAY DIFFRACTION
CHARGED PARTICLES
COHERENT SCATTERING
CRYSTAL LATTICES
CRYSTAL STRUCTURE
CRYSTALS
DIFFRACTION
DISTANCE
EMISSION
FILMS
HYDRIDES
HYDROGEN COMPOUNDS
IONS
LUMINESCENCE
NITROGEN COMPOUNDS
NITROGEN HYDRIDES
PHOTON EMISSION
PHYSICAL PROPERTIES
QUASI PARTICLES
SCATTERING
SORPTION
SYMMETRY GROUPS
TEMPERATURE RANGE
THERMODYNAMIC PROPERTIES