Reaction of K2[Ru(NO)Cl5] with K8[γ-SiW10O36] Under Hydrothermal Conditions: Synthesis of [SiW11O39{Ru(NO)}]5–

Resumo

The thermostating of an aqueous solution of K₂[Ru(NO)Cl₅] and K₈[γ-SiW₁₀O₃₆] at 160 °С for 16 h leads to a change in the color of the solution from pink to brown. According to the HPLC-ICP-AES data, the reaction products are Keggin anions: [SiW₁₁O₃₉{Ru(NO)}]^5– (1) and [SiW₁₂O₄₀]^4– (2). The formation of 1 and 2 is demonstrated by mass spectrometry for tetrabutylammonium salts in an acetonitrile solution. Red crystals of the composition ((CH₃)₂NH₂)₄H[α-SiW₁₁O₃₉{Ru(NO)}]·6H₂O (1а) are obtained by fractional crystallization of dimethylammonium salts.