η3-allyl complexes of molybdenum: reactions of [MoCl(η3-C3H5)3]2 and the crystal structure of [MoOAc(η3-C3H5)3]
1986; Elsevier BV; Volume: 5; Issue: 1-2 Linguagem: Inglês
10.1016/s0277-5387(00)84950-5
ISSN1873-3719
AutoresReinhard Benn, S. Holle, P.W. Jolly, Carl Krüger, Carlos C. Romão, Maria João Romão, Anna Rufińska, Gerhard Schroth,
Tópico(s)Metalloenzymes and iron-sulfur proteins
Resumo[MoCl(η3-C3H5)3]2 reacts with donor ligands (L) with cleavage of the chloride bridges to give [MoCl(L)(η3-C3H5)3] complexes from which the halide may be substituted by an alkyl group through reaction with Grignard reagents. Metathetical replacement is observed upon treatment with silver acetate or thallium acetylacetonate. The 1H NMR spectra of these tris(η3-allyl)molybdenum complexes indicate that the three allyl groups are magnetically inequivalent and asymmetrically bonded to the metal atom. This is borne out by a crystal-structure determination of [MoOAc(η3-C3H5)3]. Treatment of the chloride with bidentate chelating ligands leads to ionic species of the type [Mo(L—L)(η3-C3H5)3]+X−, while the product of the reaction with lithium in the presence of trimethylphosphite is [MoP(OMe)33(η3-C3H5)2].
Referência(s)