New Palladium(II)−(η3/5- or η1-Indenyl) and Dipalladium(I)−(μ,η3-Indenyl) Complexes
New Palladium(II)−(η3/5- or η1-Indenyl) and Dipalladium(I)−(μ,η3-Indenyl) Complexes
复制标题
DOI：
10.1021/ja060747a
复制
发表时间：
2006-04
影响因子：
15
通讯作者：
Christine Sui-Seng;G. Enright;D. Zargarian
中科院分区：
文献类型：
--
作者：
Christine Sui-Seng;G. Enright;D. Zargarian
Reaction of the dimeric species [(η3-Ind)Pd(μ-Cl)]2 (1) (Ind = indenyl) with NEt3 gives the complex (η3-5-Ind)Pd(NEt3)Cl (3), whereas the analogous reactions with BnNH2 (Bn = PhCH2) or pyridine (py) afford the complexes trans-L2Pd(η1-Ind)Cl (L = BnNH2 (4), py (5)). Similarly, the one-pot reaction of 1 with a mixture of BnNH2 and the phosphine ligands PR3 gives the mixed-ligand, amino and phosphine species (PR3)(BnNH2)Pd(η1-Ind)Cl (R = Cy (6a), Ph (6b)); the latter complexes can also be prepared by addition of BnNH2 to (η3-5-Ind)Pd(PR3)Cl (R = Cy (2a), Ph (2b)). Complexes 6 undergo a gradual decomposition in solution to generate the dinuclear PdI compounds (μ,η3-Ind)(μ-Cl)Pd2(PR3)2 (R = Cy (7a), Ph (7b)) and the PdII compounds (BnNH2)(PR3)PdCl2 (R = Cy (8a), Ph (8b)), along with 1,1‘-biindene. The formation of 7 is proposed to proceed by a comproportionation reaction between in situ-generated PdII and Pd0 intermediates. Interestingly, the reverse of this reaction, disproportionation, also occurs spontaneou...
