Abstract
The reactivity of nickel tetracarbonyl [Ni(CO)4] with the N‐Heterocyclic Carbenes (NHCs) 1,3‐diisopropylimidazolin‐2‐ylidene (iPr2Im) and 1,3‐di(isopropyl)‐4,5‐di(methyl)imidazolin‐2‐ylidene (iPr2ImMe) is reported. The reaction of [Ni(CO)4] with two equiv. iPr2Im and iPr2ImMe and one equiv. iPr2ImMe leads to the formation of the complexes [Ni(iPr2Im)2(CO)2] 2, [Ni(iPr2ImMe)2(CO)2] 3, and [Ni(iPr2ImMe)(CO)3] 4. The reaction of [Ni(CO)4] with one equiv. (or less) iPr2Im affords the triangular 44 VE (valence electron) cluster complex [Ni3(iPr2Im)3(µ2‐CO)3(µ3‐CO)] 1, a NHC‐stabilized analogue of the parent neutral nickel Chini cluster [Ni3(CO)3(µ2‐CO)3].
Published Version
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