Abstract
AbstractReactions of LGa(Cl)P(cAAC) (L=HC[C(Me)N(2,6‐iPr2C6H3)]2, MecAAC (MecAAC=1‐(2,6‐di‐iso‐propylphenyl)‐3,3,5,5‐tetramethyl‐pyrrolidin‐2‐ylidene) with NaPCO and NaN3 gave LGa(PCO)P(MecAAC) (1) and LGa(N3)P(MecAAC) (2), respectively. DFT calculations on the nature of compounds 1 and 2 reveal a phosphaalkene rather than a carbene‐phosphinidene structure. The reaction of 1 with MecAAC resulted in a nucleophilic attack of the electron‐rich P atom on the γ‐C backbone of the β‐diketiminate ligand to give compound 3 as the major product and cyclic 1,2‐diphospha‐1,3‐butadiene LGa(P2OC)MecAAC (4) in minor yield.
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