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Selective Substitution of an Imido Ligand in Alkyl- and Arylimido Rhenium(VII) Complexes; Crystal Structured of (2,6-Dimethylphenyl)ammonium Trichlorobis(2,6-dimethylphenylimido)methylrhenate(VII) and Bis(2,6-dimethylphenylimido)methylbis(neopentyl)rhenium(VII)

DOI: 10.1039/DT9910000797

Source and publish data:

Journal of the Chemical Society, Dalton Transactions p. 797 - 804 (1991)

Update date:2022-08-04

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Authors:

Cook, Malcolm R.Cook, Malcolm R.

Herrmann, Wolfgang A.Herrmann, Wolfgang A.

Kiprof, PaulKiprof, Paul

Takacs, JanosTakacs, Janos

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Article abstract of DOI:10.1039/DT9910000797

Reaction of ReMeO3 and 2,6-dimethylphenyl isocyanate gives the imido complex (R=2,6-Me2C6H3.Complexes of the type or t)3> undergo selective substitution of only one imido ligand to form bis(imido) derivatives.Thus, t)3> reacts with the weak acid catechol via protonation of one imido ligand to form a stable five-co-ordinate complex t)2(O2C6H4)>.In contrast, forms a complex which can only be isolated in a pur state by the addition of pyridine (py) to give the six-co-ordinate .The complex also reacts with thiophenol to give five-co-ordinate .Reaction of with HCl gives the ionic complex .The crystal structure of this complex was determined by X-ray crystallography.The neutrak dihalide complexes (X=Cl or Br) are prepared from by the addition of 2 equivalents of pyridinium halide.Alkylation of the dichloro or dibromo derivative with neopentylmagnesium chloride gives the novel mixed-alkyl complex t)2(NR)2> as a mixture of two isomers, the structure of one of which was determined by X-ray crystallography.

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Product name:tris(2,6-dimethylphenylimino)methylrhenium(VII)

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