Reactivity studies of [Pd2(μ-X)2(PBut3)2] (X = Br, I) with CNR (R = 2,6-dimethylphenyl), H2 and alkynes

Highly Efficient CSeCF3 Coupling of Aryl Iodides Enabled by an Air‐Stable Dinuclear PdI Catalyst

“…Key to effective catalysis is that the . [16,17] We therefore initially set out to develop afacile synthesis for rapid access to catalyst 1 and identified that the direct comproportionation of commercially available Pd II I 2 and [Pd (0) (PtBu 3 ) 2 ] [18] in THF for 2hat room temperature yields the air-stable Pd I -I dimer catalyst 1 in quantitative yield (Figure 2). employed nucleophile efficiently displaces the bridging iodine atoms in complex 1,and also functions as asuitably stabilizing bridge in the dinuclear Pd I framework (as 2 or 3,see Figure 1).…”

A new synthesis for thermolabile low-valent palladium complexes by electron transfer reactions from nickel(0) to palladium(II) compounds

“…Dimeric Pd(I) complexes have been intensively investigated due to their importance in homogeneous catalytic reactions, as model complexes for clusters and for metallic surfaces [2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18]. Dimeric Pd(I) complexes, however, consisting only of the Pd 2 Cl 2 core and olefins (e.g.…”

Profound Steric Control of Reactivity in Aryl Halide Addition to Bisphosphane Palladium(0) Complexes

“…By monitoring its reaction with PhI by 1 H NMR spectroscopy, we established that an associative mechanism was again followed, albeit around 10 3 times slower than in the case of complex 5, and again without inhibition by excess ligand (Figure 1 b). [11] This behavior was not observed for the related complex 10 described above. [9] When the initial reaction was carried out with PhBr, the product 9 b could be isolated and characterized by X-ray crystallography, which demonstrates the lack of steric distortion of the coordination sphere, although some van der Waals strain is apparent.…”

“…The electrochemical procedure has been described. [9] Two mechanisms, namely coherent superexchange for small transfer distances [10,11] and hole [4] or polaron hopping [6] for long-range transfer are evoked to describe this phenomenon. [2] In this context, the movement of a positive charge (hole) through DNA has been studied intensively over the past few years.…”