Structural, Thermal behaviour and Vibrational study of a new Cesium- Ammonium Dihydrogen Phosphate Arsenate: Cs0.55(NH4)0.45H2(PO4)0.39(AsO4)0.61
Journal Title: JOURNAL OF ADVANCES IN CHEMISTRY - Year 2014, Vol 10, Issue 7
Abstract
Mixed crystals Cs0.55(NH4)0.45H2(PO4)0.39(AsO4)0.61 (CADPA) of the two antiferroelectric NH4H2PO4 (ADP) and NH4H2AsO4 (ADA) and of the two ferroelectric CsH2PO4 (CDP) and CsH2AsO4 (CDA) have been prepared by slow evaporation from aqueous solution at room temperature. The structural properties of the crystal were characterized by X-ray single analysis (performed at room temperature), which revealed that (CADPA) crystallizes in space group I42d with lattice parameters: a = 7.6473(1) Å, c = 7.6803(1) Å and Z = 4. The title compound is isostructural with the tetragonal phases of (ADP) and (ADA). This structure is characterized by two kinds of disorder: a statical or dynamical disorder of the acidic proton in the O–H…O hydrogen bond and another one which is connected with a reorientational motion of NH4+ ions. Broader peaks in the IR spectrum confirm a structural disorder in this material. Thermal analysis of the (CADPA) were characterized by differential scanning calorimetry (DSC), showed that the title compound undergo two phase transitions at T = 204 K and T = 407 K.
Authors and Affiliations
Samia CHAUCHENE, Khaled JAOUADI, Tahar MHIRI
Keywords
Related Articles
- EP ID EP652794
- DOI 10.24297/jac.v10i7.6809
- Views 144
- Downloads 0
An Experimental Study on Partial Replacement of River Sand by Manufacture Sand in Self Compacting Concrete
Self-compacting concrete (SCC) is a very fluid concrete and a homogeneous mixture that solves most of the problems related to ordinary concrete. Self-Compacting Concrete gets dense and compacted due to its own self-weigh...
The Analytical Applications And Biological Activity of Hydroxamic acids
Hydroxamic acids play a vital role in applied chemistry , the present literature review is an investigation on the analytical applications and biological activity of hydroxamic acids .The review includes a survey of th...
Experimental Study of Environment Friendly Mixed Refrigerant to Replace R-134a in a VCR System with Testing and Training of ANN
This work presents an experimental study on environment friendly mixed refrigerant to replace R134a in vapour compression refrigeration (VCR) System. The mixed refrigerants investigated are propane (R290), butane (R600),...
Synthesis, Crystal Structure and Vibrational Properties of bis (N-benzylmethylammonium) Pentachlorobismuthate (III)
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) Ã…, a= 78.82(4), β = 75,42(4), g= 76.89Â...
Raphanus sativus ameliorates atherogeneic lipid profiles in hypercholesterolemic rats and hypercholesterolemia-associated peroxidative liver damage
Objective: Raphanus sativus is a hugely used edible root vegetable. We investigated whether the feeding of the Raphanus sativus hot water extract (RSE) ameliorates atherogenic lipid profile and oxidative stress in hyperc...