STRUCTURAL INVESTIGATION OF SALTSCONTAINING IONS [Pd(NH3)4]2+ AND [IrF6]2-
A. I. Gubanov1,2, A. M. Danilenko1, A. I. Smolentsev1,2, N. V. Kuratieva1,2, A. B. Venediktov1, S. V. Korenev1,2
1Nikolaev Institute of Inorganic Chemistry, Siberian Branch, Russian Academy of Sciences, Novosibirsk, Russia
2Novosibirsk National Research State University, Novosibirsk, Russia
Keywords: синтез, координационные соединения, двойные комплексные соли, кристаллическая структура, палладий, иридий, фторокомплексы, synthesis, coordination compounds, double complex salts, crystal structure, palladium, iridium, fluoride complexes
Abstract
Double complex salts (DCS) a-[Pd(NH3)4][IrF6]×H2O ( P 21/ m , a = 6.3181(3) Å, b = 10.8718(5) Å, с = 7.4526(4) Å, b = 103.568(2)°), b-[Pd(NH3)4][IrF6]×H2O ( P 21/ с , a = 8.5773(3) Å, b = 10.8791(4) Å, с = 12.6741(3) Å, b = 122.497(2)°), [Pd(NH3)4]3[IrF6]2Cl2×H2O ( P- 1, a = 7.6080(2) Å, b = 7.6274(2) Å, с = 11.8070(3) Å, b = 122.497(2)°), and [Pd(NH3)4]2[IrF6]NO3 ( Fm -3 m , a = 11.21210(10) Å) have been synthesized and structurally characterized for the first time. The existence of polymorphs for the DCS has been revealed. The influence of the chemical composition of the initial reagents on the reaction course and, respectively, the products, has been demonstrated. A hypothesis on the influence of the second coordination sphere on the formation of one or the other polymorph of the DCS has been suggested. It has been shown that the series a-[Pd(NH3)4][МF6]×H2O (M = Pt, Pd) exhibits isostructurality.
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