Reactions of metal-metal multiple bonds. 8. Forming molybdenum-molybdenum quadruple bonds by reductive elimination (alkyl group disproportionation) in the reactions of 1,2-Mo2R2(NMe2)4 compounds (M.tplbond.M) with carbon dioxide and 1,3-diaryltriazines

1982 ◽  
Vol 104 (8) ◽  
pp. 2138-2146 ◽  
Author(s):  
M. J. Chetcuti ◽  
M. H. Chisholm ◽  
Folting K. ◽  
D. A. Haitko ◽  
J. C. Huffman
Keyword(s):  
Carbon Dioxide ◽  
Alkyl Group ◽  
Reductive Elimination ◽  
Multiple Bonds ◽  
Metal Metal ◽  
Quadruple Bonds

Metal-Metal Cooperative Bond Activation by Heterobimetallic Alkyl, Aryl, and Acetylide PtII/CuI Complexes

2020 ◽  
Author(s):  
Shubham Deolka ◽  
Orestes Rivada Wheelaghan ◽  
Sandra Aristizábal ◽  
Robert Fayzullin ◽  
Shrinwantu Pal ◽  
...  
Keyword(s):  
Alkyl Group ◽  
Bond Activation ◽  
Bond Cleavage ◽  
Terminal Alkyne ◽  
Alkyl Aryl ◽  
Metal Metal ◽  
The Stability ◽  
Selective Formation ◽  
Organoplatinum Compounds

We report selective formation of heterobimetallic PtII/CuI complexes that demonstrate how facile bond activation processes can be achieved by altering reactivity of common organoplatinum compounds through their interaction with another metal center. The interaction of the Cu center with Pt center and with a Pt-bound alkyl group increases the stability of PtMe2 towards undesired rollover cyclometalation. The presence of the CuI center also enables facile transmetalation from electron-deficient tetraarylborate [B(ArF)4]- anion and mild C-H bond cleavage of a terminal alkyne, which was not observed in the absence of an electrophilic Cu center. The DFT study indicates that the role of Cu center acts as a binding site for alkyne substrate, while activating its terminal C-H bond.

Reductive elimination of [AlH2]+ from a cationic Ga-Al dihydride

2021 ◽  
Author(s):  
Jun Okuda ◽  
Louis J. Morris ◽  
Laurent Maron ◽  
Ambre Carpentier
Keyword(s):  
Oxidative Addition ◽  
Reductive Elimination ◽  
Metal Bond ◽  
Metal Metal

Oxidative addition of TMEDA-supported [AlH2]+ to [{BDI}Ga] (BDI = {HC(C(CH3)N(2,6-iPr2-C6H3))2) provides [{BDI}Ga(H)-Al(H)(tmeda)]¬[B(C6H3-3,5-Me2)4] (TMEDA = N,N,N’N’-tetramethylethylene¬diamine) with a covalent metal-metal bond. The reaction is readily reversed by substituting TMEDA for an...

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