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- W2073318302 abstract "Abstract The isolation and characterization of salts of a new series of fluoromolybdates(V) are described. The hydrazinium salt, N2H6[Mo(OH)F6]. H2O has been obtained by reducing a solution of MoO3 in 40 per cent HF with hydrazine fluoride. The rubidium, caesium and α-naphthyl aminium salts, M2[Mo-(OH)F6], where M = Rb, Cs and C10H10N have been obtained by crystallizing the fluorides of the respective cations with the hydrazinium(II) salt in 20 per cent HF medium. A potassium salt which has been formulated as K2[MoOF4(HF2)] or K[MoOF4]. KHF2 on the basis of i.r. spectra, has also been prepared by the same method. All the salts are green crystalline substances and stable when dry. The hydrazinium(II) and the potassium salts can be recrystallized from 20 per cent HF. The oxidation number of molybdenum determined by oxidation with dichromate and the magnetic moment values indicate the quinquevalency of molybdenum in the salts. The i.r. spectra of the rubidium and caesium salts give the characteristic ν(OH) bands, but no δ(HOH) band. Strong and sharp bands observed at around 980 cm−1 in the spectra of these hydroxo salts have been tentatively assigned as the deformation mode of MoOH group. The hydrazinium salt undergoes dehydrohalogenation and under different conditions the complexes N2H6-[MoOF5], [Mo(OH)F4(N2H4)] and [MoOF3(N2H4)] have been isolated." @default.
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- W2073318302 date "1974-10-01" @default.
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- W2073318302 title "A new series of molybdenum(V) fluoro complexes" @default.
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- W2073318302 doi "https://doi.org/10.1016/0022-1902(74)80266-6" @default.
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