Synthesis and structure of diethylenetriammonium tetrachloroaurates(III)

Article abstract of DOI:10.1134/S0036023611050159

The (DienH₃)[AuCl₄]₃ ? H₂O (I) and (DienH₃)₂[AuCl₄]Cl₅ (II) compounds were obtained by the reaction of HAuCl₄ with diethylenetriamine trihydrochloride (DienH₃Cl₃) in hydrochloric acid. The compounds were characterized by elemental analysis, X-ray diffraction, thermogravimetry, and IR spectroscopy. Crystals of I and II are monoclinic with space group P2₁/n. For I, a = 12.2314(3) ?, b = 14.6077(5) ?, c = 13.2680(5) ?, β = 106.7350(10)°, V = 2270.22(13) ?³, Z = 8. For II, a = 6.62990(10) ?, b = 17.9026(5) ?, c = 10.3661(3) ?, β = 101.9230(10)°, V = 1203.83(5) ?³, Z = 2. Both structures are ionic. The gold atoms in I and II have a 4 + 2 coordination environment. The Au-Cl bond lengths are within 2.276-2.294 ?, and the axial Au...Cl contacts are within 3.315-3.405 ?. The diethylenetriammonium cation in I and II has different conformations.