Abstract
The [C8H12N]2 BiCl5 compound crystallised in the triclinic system with space group P-1 with a = 9,833(4), b = 10,044(7), c = 12,225(7) Å, a= 78.82(4), β = 75,42(4), g= 76.89°(5) and Z = 2. The average density value, ρx = 1.518 g.cm-3 is in agreement with the calculated one, ρx = 1.494 g.cm-3. The atomic arrangement can be described as an alternation of organic and inorganic layers. The anionic layer is built up of octahedral [Bi2Cl10]-4. The organic layers are arranged in sandwich between the anionic ones. The crystal packing is governed by means of the ionic N–H---Cl hydrogen bonds, forming a three dimensional network. The nature of the distortion of the inorganic polyhedra has been studied and can be attributed to the stereo activity of the Bi(III) lone electron pair. The infrared and Raman spectra was recorded in the 4000–400 cm-1 frequency region.
Highlights
A great attention has been focused on organic-inorganic hybrid materials based on metal-halide units; those materials are frequently characterized by their various physical and chemical properties that could lead to technological innovations like magnetic or ferroelectric transitions, conductivity, electroluminescence, and photoluminescence [1,2,3,4,5,6].The alkylammonium halogenoantimonates(III) and bismuthates(III) of the general formula RaMbX3b+a evoke much interest because of their ferroelectric and ferroelastic properties [7,8,9]
The bismuth compounds represent a potential class of materials with unusual structural arche- types, due to the fact that the Bi(III) ion exhibits a variety of coordination mode, depending on crystal packing and on ligands: octahedral coordination being observed
The main types of transitions have been governed by the displacement dynamics of the ammonuim cations [17, 19]. It is associated with changes in the hydrogen bonding joining the organic– inorganic chains
Summary
A great attention has been focused on organic-inorganic hybrid materials based on metal-halide units; those materials are frequently characterized by their various physical and chemical properties that could lead to technological innovations like magnetic or ferroelectric transitions, conductivity (super conductivity), electroluminescence, and photoluminescence [1,2,3,4,5,6]. The alkylammonium halogenoantimonates(III) and bismuthates(III) of the general formula RaMbX3b+a (where R denotes organic cations, M= Sb, Bi and X = Cl, Br, I) evoke much interest because of their ferroelectric and ferroelastic properties [7,8,9]. Numerous compounds of this family display frequently multiple structural phase transitions [10, 11]. The main types of transitions have been governed by the displacement dynamics of the ammonuim cations [17, 19] It is associated with changes in the hydrogen bonding joining the organic– inorganic chains. We report the synthesis, the structural characterizations by X-ray diffraction, the differential scanning calorimetry (DSC) and vibrational studies of the bis (N-benzylmethylammonium) pentachlorobismuthate (III)
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