The reaction of (Me(3)Si)(2)TIP with V(NNMe(2))(OAr)(3) results in the production of V(NNMe(2))(TIP)(OAr), where TIP is 2-((2-thiolatophenylimino)methylene)phenolate. The aryloxide is readily displaced by ISiMe(3) to form an insoluble iodide complex formulated as V(NNMe(2))(TIP)(I). The iodide was used to prepare three different complexes: [V(NNMe(2))(TIP)(dmpe)]I, [V(NNMe(2))(TIP)(Bu(t)bpy)][OTf], and [V(NNMe(2))(TIP)(Bu(t)bpy)][SbF(6)]. The phosphine derivative, [V(NNMe(2))(TIP)(dmpe)]I, was characterized by X-ray diffraction and shows a quite short N-N distance of 1.293(3) A indicative of a dominant isodiazene resonance form.
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http://dx.doi.org/10.1039/b718968k | DOI Listing |
Inorg Chem
November 2016
Faculty of Chemistry, University of Wrocław, 14, F. Joliot-Curie, 50-383 Wrocław, Poland.
A series of oxidovanadium(V) complexes [VO(L-κO,N,N,O)(OR)] (1a, R = Et, L = L; 1b, R = Me, L = L; 2, R = Me, L = L; 3, R = Me, L = L) were synthesized by the σ-bond metathesis reaction between [VO(OR)] and the linear diaminebis(phenol) derivatives HL (salans) containing different para-substituents on the phenoxo group [CMeCHCMe, L; Me, L; Cl, L]. As shown by X-ray crystallography complexes 1a, 1b, and 2 exhibit cis-α geometry, do have a stereogenic vanadium center, and exist as a racemic mixture of the Δ cis-α and Λ cis-α enantiomers. In solution, as demonstrated by H and V NMR investigations, the structures of complexes 1-3 are consistent with their solid state.
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April 2008
Michigan State University, Department of Chemistry, East Lansing, MI 48824, USA.
The reaction of (Me(3)Si)(2)TIP with V(NNMe(2))(OAr)(3) results in the production of V(NNMe(2))(TIP)(OAr), where TIP is 2-((2-thiolatophenylimino)methylene)phenolate. The aryloxide is readily displaced by ISiMe(3) to form an insoluble iodide complex formulated as V(NNMe(2))(TIP)(I). The iodide was used to prepare three different complexes: [V(NNMe(2))(TIP)(dmpe)]I, [V(NNMe(2))(TIP)(Bu(t)bpy)][OTf], and [V(NNMe(2))(TIP)(Bu(t)bpy)][SbF(6)].
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