Investigation of the reactivity of arylamines, organo-hydrazines and tolylisocyanate towards [PW12−xMxO40]n− Keggin anions

Abstract

Reaction of K₇[A,α-PW₉Mo₂O₃₉] with Na₂MoO₄·2H₂O in a mixture of water/dioxane/hydrochloric acid and further precipitation with (Bu₄N)Br provided (Bu₄N)₃[A,α-PW₉Mo₃O₄₀] (3). Analogous reaction with K_7−xNa_x[α-PW₁₁O₃₉] is an alternative to the synthesis of (Bu₄N)₃[α-PW₁₁O₃₉{Mo^VIO}] (2). Multinuclear NMR and ESI mass spectrometry have been used to interpret the reaction of (Bu₄N)_x[α-PW₁₁O₃₉{ReO}] (x = 3 1; x = 4 1_II), (Bu₄N)_x[α-PW₁₁O₃₉{MoO}] (x = 3 2; x = 4 2_III) and (Bu₄N)₃[A,α-PW₉Mo₃O₄₀] (3) by organohydrazines, arylamines, tolylisocyanate and tetraphenylphosphine imide.