The reaction of the μ-aminocarbyne complex [Fe2{μ-CN (Me)(Xyl)}(μ-CO)(CO)(NCCMe3)(Cp)2] [SO3CF3] (2) (Xyl=2,6-Me2C6 H3) with tolylacetylide, followed by treatment with HSO3CF3 affords the complex [Fe2 {μ-η1:η3C(Tol)=C=C (CMe3)N(H)CN(Me)(Xyl)}(μ-CO)(CO)(Cp2)] [SO3CF3] (3) (Tol=4-MeC6H4). The X-ray molecular structure of 3 reveals the peculiar character of the bridging ligand, which exhibits both η1:η2 allene and aminocarbene nature. The formation of 3 proceeds through several intermediate species, which have been detected by IR spectroscopy. Addition of HSO3CF3 at an early stage of the reaction between 2 and LiC≡CTol leads to the formation of the imine complex [Fe2{μ-CN(Me)Xyl}(μ-CO)(CO) {NHC(C≡CTol)CMe3}(Cp)2][SO3 CF3] (6) indicating that the first step of the reaction consists in the acetylide addition at the coordinated NCCMe3. The molecular structure of 6 has been elucidated by an X-ray diffraction study. © 2003 Elsevier B.V. All rights reserved.
Albano V.G., Bordoni S., Busetto L., Marchetti F., Monari M., Zanotti V. (2003). C-N coupling between μ-aminocarbyne and nitrile ligands promoted by tolylacetylide addition to [Fe2{μ-CN(Me)(Xyl)}(μ-CO) (CO)(NCCMe3)(Cp)M2][SO3CF3]. Formation of a novel bridging η1:η2 allene-diaminocarbene ligand. JOURNAL OF ORGANOMETALLIC CHEMISTRY, 684(1-2), 37-43 [10.1016/S0022-328X(03)00501-1].
C-N coupling between μ-aminocarbyne and nitrile ligands promoted by tolylacetylide addition to [Fe2{μ-CN(Me)(Xyl)}(μ-CO) (CO)(NCCMe3)(Cp)M2][SO3CF3]. Formation of a novel bridging η1:η2 allene-diaminocarbene ligand
Bordoni S.;Monari M.;
2003
Abstract
The reaction of the μ-aminocarbyne complex [Fe2{μ-CN (Me)(Xyl)}(μ-CO)(CO)(NCCMe3)(Cp)2] [SO3CF3] (2) (Xyl=2,6-Me2C6 H3) with tolylacetylide, followed by treatment with HSO3CF3 affords the complex [Fe2 {μ-η1:η3C(Tol)=C=C (CMe3)N(H)CN(Me)(Xyl)}(μ-CO)(CO)(Cp2)] [SO3CF3] (3) (Tol=4-MeC6H4). The X-ray molecular structure of 3 reveals the peculiar character of the bridging ligand, which exhibits both η1:η2 allene and aminocarbene nature. The formation of 3 proceeds through several intermediate species, which have been detected by IR spectroscopy. Addition of HSO3CF3 at an early stage of the reaction between 2 and LiC≡CTol leads to the formation of the imine complex [Fe2{μ-CN(Me)Xyl}(μ-CO)(CO) {NHC(C≡CTol)CMe3}(Cp)2][SO3 CF3] (6) indicating that the first step of the reaction consists in the acetylide addition at the coordinated NCCMe3. The molecular structure of 6 has been elucidated by an X-ray diffraction study. © 2003 Elsevier B.V. All rights reserved.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
