Crystal Structure and Physicochemical Properties of 2-Diisopropylammonium Ethylammonium Sulfate Dihydrate

Wafa Amamou, Taha Guerfel, Taher Mhiri

Laboratoire de Chimie du Solide, Université de Monastir, Faculté des Sciences de Monastir, Monastir, Tunisie.
Laboratoire de l’Etat Solide, Université de Sfax, Faculté des Sciences de Sfax, Sfax, Tunisie.

DOI: 10.4236/csta.2012.13008                

Abstract

A new organic sulfate (C₈H₂₂N₂)SO₄2H2O denoted DPAES is obtained by interaction of H₂SO₄ with the organic molecule 2-[Diisopropylamino] ethylamine. We describe its crystallographic and structural features. DPAES is triclinic, Pī, with the lattice parameters a = 6.8841(2)?, b = 8.4966(2)?, c = 12.0804(3)?, = 81.824(1)^o, = 88.007(1)^o, = 78.649(1)^o, V = 685.72(3)?³, and Z = 2. Its atomic arrangement is described as inorganic chains of SO₄^2- units and water molecules, these chains are interconnected by organic groups so as to build layers parallel to the (001) planes. The IR data of DPAES are reported and discussed according to the theoretical group analysis and by comparison with IR results of similar compounds. The coupled TG-DTA thermal study shows the departure of two water molecule, con- firming the hydrated character of this compound.

Keywords

Chemical Preparation; Crystal Structure; Thermal Behavior; Organic Sulfate; Infrared and Raman Spectroscopy; NMR Spectroscopy

Conflicts of Interest

The authors declare no conflicts of interest.

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