Reaction between palladium(II) and gallium(III) halogenides in arenes: influence of halogen nature on the formation of binuclear palladium(I) clusters

Mononuclear η6‐Arene Complexes of Lanthanides: One‐Step Syntheses, Crystal Structures, and Arene Exchange

“…In addition, GaX 3 -arene solutions display a high reducing ability, [18][19][20] and one may anticipate the formation of lanthanide complexes with a formal oxidation state that is lower than +3. In practice, even the use of an excess of GaX 3 and heating of the reaction mixture leads to the Ln III complexes in all cases.…”

“…Thus, a series of low-valent platinum(0), platinum(I), and palladium(I) complexes supported by direct metal-metal bonds was isolated and crystallographically characterized. [18][19][20] In these reactions gallium(III) halides not only act as acceptors of the halide atoms, but also facilitate the process of reduction of the transition-metal halides, probably via an oxidation of the arenes. The present study has been performed in order to extend this synthetic approach to the chemistry of the f-block elements.…”

Dinuclear palladium(I) sandwich complexes of furan and toluene

“…2). The related neutral bis-toluene Pd 2 sandwich complexes, Pd 2 (m-toluene) 2 (GaCl 4 ) 2 (6), Pd 2 (m-toluene) 2 (GaBr 4 ) 2 (7), and Pd 2 (m-toluene) 2 (Ga 2 Cl 7 ) 2 (8), were structurally characterized by Kloo et al; in each case, the coordination mode of toluene is in a m-h 2 (C1-C2):h 2 (C3-C4) mode or a m-h 2 (C1-C2):h 2 (C4-C5) mode [7][8][9]. Concerning the arene rings, uncoordinated C5-C6 (1.379(5) Å ) is considerably shorter than other C-C ring bonds (C1-C2, C2-C3, C3-C4, C4-C5, and C1-C6 are in the range of 1.406(5) Å -1.429(7) Å ).…”

One‐Step Synthesis of a Platinum(0)–Gallium(III) Chrysene Complex

“…Recent investigations of gallium( III ) halide–aromatic solvent systems with respect to platinum‐group metal halides have shown them to be very efficient reducing media 1. 2 Another attractive feature of gallium( III ) halides is their aptitude to abstract halide ions from other metal halides, which facilitates metal–metal bond formation. Taking advantage of these properties, we have prepared and crystallographically characterized a series of dipalladium( I ) and diplatinum( I ) complexes [M 2 (η 6 ‐arene) 2 (GaX 4 ) 2 ] (arene=benzene, its alkylated derivatives, or naphthalene; X=Cl − or Br − ) 1.…”