Synthesis and thermal decomposition of complexes of composition /Ru/bpy/3X2 /XOH−, Cl−, Br−, I−, ClO4−, ReO4−, ReO− and VO3−/

Bujewski, A.; Warachim, H.; Grzedzicki, K.; Dobrowolski, J.

doi:10.1016/0040-6031(85)85993-1

Cited by 6 publications

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“…Akad~miai Kiadr, Budapest according to [6]) and H2PbC16 [1]. Free chlorine, which is always present in solutions of hexachloroplumbic acid [7], may oxidize orange [Ru(dipy)3] z + to green [Ru(dipy)3] 3+ [8], and hence the synthesis of [Ru(dipy)3]PbCl 6 must be carried out carefully and rapidly to avoid the competing redox reaction.…”

Section: John Wiley and Sons Limited Chichestermentioning

confidence: 99%

Thermal decompositions of [Co(py)4Cl2]2PbCl6 and [Ru(dipy)3]PbCl6

Szychlinski

Łubkowski

Błażejowski

et al. 1987

Journal of Thermal Analysis

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The thermal decompositions of [Co(py)4Clz]2PbCl 6 and [Ru(dipy)3]PbCl 6 were examined by dynamic thermoanalytical methods and under isothermal conditions permitting quantitative determination of some of the reaction products. A comparative study of the corresponding chloride salts was also performed. Both groups of compounds decompose with the liberation of chlorine and organic ligands (and H~O in the case of the hydrates of the chlorides), and the process is accompanied by the simultaneous transitions Pb(4+)---,Pb(2+) and Co(3+) --,Co(2 + ). The ruthenium complex salts initially decompose without a change in the oxidation state of the Ru atom, but upon thermal treatment of the hexachloroplumbate certain chlorination products of the organic ligands are formed.Hexachloroplumbic acid (H2PbC16) forms a large group of salt-like derivatives with numerous nitrogen-containing organic bases [1]. Among the hexachloroplumbates of metals, only the existence of the salts of potassium, rubidium and caesium has so far been proved. Several compounds of H2PbC16 with monoand divalent complex cations are also known [1]. Investigations of the thermal properties and thermochemistry of hexachloroplumbic acid derivatives were conducted earlier in this laboratory on the hexachloroplumbates of alkali metals [2] and numerous nitrogen-containing bases [3,4]. The present communication reports the results of an analogous study of two hexachloroplumbates of complex cations [Co(py),C12)2]PbCl 6 and the newly synthesized [Ru(dipy)a]PbC16, as well as the corresponding chloride salts.

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Section: John Wiley and Sons Limited Chichestermentioning

confidence: 99%

Thermal decompositions of [Co(py)4Cl2]2PbCl6 and [Ru(dipy)3]PbCl6

Szychlinski

Łubkowski

Błażejowski

et al. 1987

Journal of Thermal Analysis

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Synthesis, features and thermal decomposition of hexachlorostannates and hexachloroplatinates of tris(2,2′-dipyridyl)metal(II) and tris(1,10-phenanthroline)metal(II) (metal=Ru, Fe, Ni)

Łubkowski

Bujewski

Szychlinski

et al. 1992

Journal of Thermal Analysis

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Several complex salts Ofrvgeneral formula [MII(dipy)3]MIVCl6 or [Mn(phen)3]MIVCl6(where M II = Ru, Fe, Ni and M = Sn, Pt) were synthetized and subjected to thermal analyses. Heating of these derivatives leads to the release of organic fragments and chlorine, which are often involved in oxidation processes. The residues comprise metal oxides or pure metals (e,g. Pt). Differences in the structures and features of the ligand molecules, revealed on the basis of quantum-chemistry calculations, account qualitatively for the differences in behaviour and stability of the complex compounds studied.

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