Complex salts [Pd(NH3)4](ReO4)2 and [Pd(NH3)4](MnO4)2: Synthesis, structure, and thermal properties

Задесенец, А. В.; Khranenko, S. P.; Shubin, Yu. V.; Байдина, И. А.; Коренев, С. В.

doi:10.1134/s1070328406050101

Cited by 15 publications

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“…Complex salts in which one of the metals is rhenium are of interest, in particular, the compounds in which the cationic part is a complex ion of any metal and the anionic part consists of the perrhenate ion. Therefore, complex compounds of the composition [M(NH 3 ) 5 Cl](ReO 4 ) 2 , where M = Ir, Rh, Ru, Cr, Co [3], [M(NH 3 ) 4 ](ReO 4 ) 2 (M = Pd, Pt) [4,5], [Pt(NH 3 ) 5 Cl](ReO 4 ) 3 ⋅2H 2 O [6], [Au(dien)Cl](ReO 4 ) 2 , where dien is diethylenetriamine C 4 H 13 N 3 [7] have previously been studied.…”

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Synthesis and structure investigation of Co(III) complex salts with the perrhenate anion

et al. 2012

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Complex salts of the composition [Co(NH 3 ) 6 ](ReO 4 ) 3 ⋅2H 2 O (I), [Co(en) 3 ](ReO 4 ) 3 (II), [Co(NH 3 ) 5 H 2 O](ReO 4 ) 3 ⋅2H 2 O (III), and [Co(NH 3 ) 5 Cl](ReO 4 ) 2 ⋅0.5H 2 O (IV) are obtained. Their crystal structures are determined by single crystal XRD. Crystallographic characteristics: (I) a = 9.9797(3) Å, b = 12.6994(3) Å, c = 14.7415(4) Å, β = 102.870(1)°, C2/c space group; (II) a = 8.0615(3) Å, b = 8.4483(4) Å, c = 8.8267(4) Å, α = 61.923(2)°, β = 89.552(2)°, γ = 72.295(2)°, P1 space group; (III) a = 8.0086(4) Å, b = 12.9839(6) Å, c = 17.5122(7) Å, β=91.858(1)°, P2 1 /n space group; (IV) a = 14.9446(3) Å, b = 14.6562(4) Å, c = 12.2434(4) Å, Cmc2 1 space group. Compounds consisting of complex cations and anions (double complex salts) are considered as precursors of various nanoscale bimetallic powders [1, 2]. Complex salts in which one of the metals is rhenium are of interest, in particular, the compounds in which the cationic part is a complex ion of any metal and the anionic part consists of the perrhenate ion. Therefore, complex compounds of the composition [M(NH 3 ) 5 Cl](ReO 4 ) 2 , where M = Ir, Rh, Ru, Cr, Co [3], [M(NH 3 ) 4 ](ReO 4 ) 2 (M = Pd, Pt) [4, 5], [Pt(NH 3 ) 5 Cl](ReO 4 ) 3 ⋅2H 2 O [6], [Au(dien)Cl](ReO 4 ) 2 , where dien is diethylenetriamine C 4 H 13 N 3 [7] have previously been studied.The purpose of this work is to synthesize and structurally investigate some amine complexes of cobalt(III) with a ratio Co:Re = 1:3, such as [Co(NH 3 ) 6 ](ReO 4 ) 3 ⋅2H 2 O (I), [Co(en) 3 ](ReO 4 ) 3 (II), where en is ethylenediamine C 2 Н 8 N 2 , [Co(NH 3 ) 5 H 2 O](ReO 4 ) 3 ⋅2H 2 O (III), and also to determine the crystal structure of [Co(NH 3 ) 5 Сl](ReO 4 ) 2 ⋅0,5H 2 O (IV) (metal ratio is 1:2). For the first time, compound IV was obtained in the synthesis of a series of complex compounds [M(NH 3 ) 5 Cl]× (ReO 4 ) 2 , where M = Ir, Rh, Ru, Cr, Co [3]. However, the diffraction pattern of the polycrystalline sample was indexed using the structural data for [Rh(NH 3 ) 5 Cl](ReO 4 ) 2 complex salt, and their isostructurality was established. The description of the crystal structure of [Co(NH 3 ) 5 Сl](ReO 4 ) 2 ⋅0.5H 2 O (IV) determined by single crystal XRD is given in the present work. EXPERIMENTAL In the work, we used NaReO 4 (chemically pure), [Co(en) 3 ]Cl 3 [8], [Co(NH 3 ) 5 Cl]Cl 2 , and [Co(NH 3 ) 6 ]Cl 3 [9] complexes obtained by the known procedures.

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Synthesis and structure investigation of Co(III) complex salts with the perrhenate anion

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“…[Tetraamminecopper(II)] perrhenate and the perrhenate and pertechnetate of [tetraamminepalladium(II)] and [tetraammineplatinum(II)] cations, respectively, are isomorphic triclinic (space groups are P-1) crystals [90,91]. The perrhenates of [tetraamminepalladium(II)] and [tetraammineplatinum(II)] cations are also triclinic, but their space groups are P1 [90,92]. The platinum complex has at least two polymorphs, a triclinic and a monoclinic one [93] (Table 1).…”

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confidence: 99%

“…The band located at 899 cm [Tetraamminepalladium(II)] permanganate and perrhenate or [tetraammineplatinum(II)] pertechnetate were first prepared by mixing ice-cooled concentrated aqueous solutions of [M(NH 3 ) 4 ]Cl 2 (M = Pd, Pt) complexes and an aqueous solution of a stoichiometric amount of NaMnO 4 (Pd) or NaReO 4 (Pd, Pt). After slow evaporation in air, needle-shaped single crystals were obtained in 75-80% yield [90,93]. [Tetraammineplatinum(II)] perrhenate was also synthesized in 80% yield by boiling solid silver perrhenate with an aqueous solution of [Pt(NH 3 ) 4 ]Cl 2 for 40 min [93].…”

Section: [Co(nh 3 ) 4 Co 3 ]Mnomentioning

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Review on the Chemistry of [M(NH3)n](XO4)m (M = Transition Metal, X = Mn, Tc or Re, n = 1–6, m = 1–3) Ammine Complexes

Mehrotra

2023

Inorganics

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The preparation of ammine complexes of transition metals having oxidizing anions such as permanganate and perrhenate ions is a great challenge due to possible reactions between ammonia and oxidizing anions during the synthesis of these materials. However, it has an important role in both the development of new oxidants in organic chemistry and especially in the preparation of mixed-metal oxide catalyst precursors and metal alloys for their controlled temperature decomposition reactions. Therefore, in this paper, synthetic procedures to prepare ammonia complexes of transition metal permanganate, pertechnetate, and perrhenate (the VIIB group tetraoxometallates) salts have been comprehensively reviewed. The available data about these compounds’ structures and spectroscopic properties, including the presence of hydrogen bonds that act as redox reaction centers during thermal decomposition, are given and evaluated in detail. The nature of the thermal decomposition products has also been summarized. The available information about the role of the ammine complexes of transition metal permanganate salts in organic oxidation reactions, such as the oxidation of benzyl alcohols and regeneration of oxo-compounds from oximes and phenylhydrazones, including the kinetics of these processes, has also been collected. Their physical and chemical properties, including the thermal decomposition characteristics of known diammine (Ag(I), Cd, Zn, Cu(II), Ni(II)), triammine (Ag(I)), and simple or mixed ligand tetraammine (Cu(II), Zn, Cd, Ni(II), Co(II), Pt(II), Pd(II), Co(III)), Ru(III), pentaammine (Co(III), Cr(III), Rh(III) and Ir(III)), and hexaammine (Ni(II), Co(III), Cr(III)) complexes of transition metals with tetraoxometallate(VII) anions (M = Mn, Tc and Re), have been summarized. The preparation and properties of some special mixed ligand/anion/cation-containing complexes, such as [Ru(NH3)4(NO)(H2O)](ReO4)2, [Co(NH3)5(H2O)](ReO4)2, [Co(NH3)5X](MnO4)2 (X = Cl, Br), [Co(NH3)6]Cl2(MnO4), [Co(NH3)5ReO4]X2 (X = Cl, NO3, ClO4, ReO4), and K[Co(NH3)6]Cl2(MnO4)2, are also included.

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“…One such precursor, [Pd(NH 3 ) 4 ](ReO 4 ) 2 , was prepared and characterized originally by Zadesenets et al [33]. This slightly water-soluble double complex salt (DCS) consists of two perrhenate ions weakly coordinated to a square-planar tetraammine Pd 2+ complex [34].…”

Section: Introductionmentioning

confidence: 99%

Catalysts for selective hydrogenation of furfural derived from the double complex salt [Pd(NH3)4](ReO4)2 on γ-Al2O3

Thompson

Lamb

2017

Journal of Catalysis

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a b s t r a c tThe double complex salt [Pd(NH 3 ) 4 ](ReO 4 ) 2 was employed as precursor of supported bimetallic catalysts for selective hydrogenation of furfural. Direct reduction of [Pd(NH 3 ) 4 ](ReO 4 ) 2 on c-Al 2 O 3 in flowing H 2 at 400°C yields bimetallic nanoparticles 1-2 nm in size that exhibit significant interaction between the metals, as evidenced by temperature-programmed hydride decomposition (complete suppression of b-PdH x formation), extended X-ray absorption fine structure spectroscopy at the Pd K and Re L III edges (PdARe distance = 2.72 Å), and scanning transmission electron microscopy with energy dispersive X-ray analysis. In contrast, calcination of [Pd(NH 3 ) 4 ](ReO 4 ) 2 on c-Al 2 O 3 at 350°C in air and subsequent reduction in H 2 at 400°C results in metal segregation and formation of large (>50 nm) supported Pd particles; Re species cover the Pd particles and c-Al 2 O 3 support. A PdRe 1:2 catalyst prepared by sequential impregnation and calcination using HReO 4 and [Pd(NH 3 ) 4 ](NO 3 ) 2 has a similar morphology.The catalyst derived by direct reduction of [Pd(NH 3 ) 4 ](ReO 4 ) 2 on c-Al 2 O 3 exhibits remarkably high activity for selective hydrogenation of furfural to furfuryl alcohol (FAL) at 150°C and 1 atm. Suppression of H 2 chemisorption via elimination of Pd threefold sites, as evidenced by CO diffuse-reflectance infrared Fourier transform spectroscopy, correlates with increased FAL selectivity.

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Complex salts [Pd(NH3)4](ReO4)2 and [Pd(NH3)4](MnO4)2: Synthesis, structure, and thermal properties

Cited by 15 publications

References 4 publications

Synthesis and structure investigation of Co(III) complex salts with the perrhenate anion

Synthesis and structure investigation of Co(III) complex salts with the perrhenate anion

Review on the Chemistry of [M(NH3)n](XO4)m (M = Transition Metal, X = Mn, Tc or Re, n = 1–6, m = 1–3) Ammine Complexes

Catalysts for selective hydrogenation of furfural derived from the double complex salt [Pd(NH3)4](ReO4)2 on γ-Al2O3

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