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The 1:1 molar reactions of WCl6 with a selection of aliphatic amines, in CH2Cl2 at room temperature, led to the isolation of the W(V) salts [amineH][WCl6] (amine=NEt3, 1; NHEt2, 2; pyrrolidine, 3; NH2CH2Ph, 4), in 47–57% yields. Analogously, [dmpH][WCl6], 5, was obtained in 55% yield from WCl6/3,5-dimethylpyrazole (dmp). The 1:2 molar reactions of WCl6 with NEt3 and NH2CH2Ph afforded the W(IV) salts...
The reactions of NbCl5 with limited amounts (1–2molarequivalents) of a series of primary, secondary and tertiary amines were investigated in dichloromethane as solvent. The 1:1 reaction of NbCl5 with NHEt2 cleanly afforded an equimolar mixture of [NbCl4(NEt2)]2, 1, and [NH2Et2][NbCl6], 2a; the former product constitutes the first example of structurally characterized Nb(V) chlorido–amido complex....
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