Abstract
The reaction of K2[Ru(NO)Cl5] with pyridine in aqueous ethanol at pH ∼ 7–8 affords a nitrosoruthenium hydroxocomplex mer-[Ru(NO)Py3Cl(OH)]Cl·1.5H2O (I) (yield ∼55%). Treatment of hydroxocomplex I with hydrochloric acid at room temperature gives the aqua complex mer-[Ru(NO)Py3Cl(H2O)]Cl2·2H2O·0.5HCl (II). The structures of the compounds are determined by X-ray crystallography: I, space group P21/n, a = 9.2292(4) A, b = 11.7781(4) A, c = 17.4915(7) A, β = 90.9560(10)°, R = 4.84%; II, space group P-1, a = 7.3528(9) A, b = 11.5793(11) A, c = 13.6961(16) A, α = 84.558(3)°, β = 87.668(4)°, γ = 74.146(4)°, R = 6.22%. Compounds I and II are characterized by powder XRD, 1H and 13C NMR, and IR spectroscopy. The thermal decomposition of compound II in the inert atmosphere is examined by thermal analysis.
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