0000000000323372
AUTHOR
And Ari Lehtonen
showing 2 related works from this author
Reactions of Tris(ethanediolato)tungsten and Tungsten Oxytetrachloride with Aminotris(phenol)s: Alkoxide, Chloro, and Alkyl Derivatives of Oxotungst…
2005
Trisdiolatotungsten(VI) complex [W(eg)3] (eg = 1,2-ethanediolato dianion) reacts in refluxing toluene solution with phenolic ligand precursors tris(2-hydroxy-3,5-dimethylbenzyl)amine (H3LMe) and tris(2-hydroxy-3,5-di-tert-butylbenzyl)amine (H3LtBu) to form monomeric oxotungsten(VI) complexes [WO(LMe)(Heg)] and [WO(LtBu)(Heg)], respectively. These complexes undergo chloride-for-alkoxide substitution when treated with SOCl2 in CH2Cl2, which leads to the formation of corresponding chloro complexes [WO(LMe)Cl] and [WO(LtBu)Cl]. Identical chloro complexes are also formed in the reaction between these phenolic ligand precursors and [WOCl4]. The reaction of [WO(LR)Cl] complexes with Grignard reage…
Tungsten(VI) complexes with aminobis(phenolato) [O,N,O] donor ligands.
2004
The reaction between trisdiolatotungsten(VI) complex [W(eg)(3)] (1) (eg = 1,2-ethanediolato dianion) and phenolic ligand precursor methylamino-N,N-bis(2-methylene-4,6-dimethylphenol) (H(2)L(Me)) or methylamino-N,N-bis(2-methylene-4-methyl-6-tert-butylphenol) (H(2)L(tBu)) affords monomeric oxotungsten complex [WO(eg)(L(Me))] (2) or [WO(eg)(L(tBu))] (3), respectively. These complexes react further with chlorinating reagents, which leads to the displacement of ethanediolato ligands from the complex units and formation of cis and trans isomers of the corresponding dichloro complexes [WOCl(2)(L(Me))] (4) and [WOCl(2)(L(tBu))] (5), respectively. Identical dichloro complexes were also prepared by …