Tetramethylethylenediamine(dimethyl)nickel(II) explained

Tetramethylethylenediamine(dimethyl)nickel(II) is the organonickel complex with the formula (Me = CH3). This yellow-brown, air-sensitive compound is popular precursor to diverse organonickel complexes. It is prepared from the tmeda adduct of nickel(II) acetylacetonate by reaction with methyl lithium.[1] [2]

The tmeda ligand is easily displaced by bases such as bipyridine and diphosphines. Treatment of the complex with electrophilic alkenes results in elimination of ethylene, giving alkene complexes.[2]

References

  1. 10.1021/acs.organomet.0c00500. A Practical Synthesis of (tmeda)Ni(CH3)2, Isotopically Labeled (tmeda)Ni(13CH3)2, and Neutral Chelated-Nickel Methyl Complexes . 2020 . Göttker-Schnetmann . Inigo . Mecking . Stefan . Organometallics . 39 . 18 . 3433–3440 . 224930545 .
  2. 10.1016/0022-328X(88)89050-8. Tmeda-Nickel-Komplexe . 1988 . Kaschube . Wilfried . Pörschke . Klaus R. . Wilke . Günther . Journal of Organometallic Chemistry . 355 . 1–3 . 525–532 .

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