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[Ni{N(SiMe2CH2PtBu2)2}]+: Direct Observation of Transannular Si[BOND]C(sp3) Bond Coordination


  • We thank the National Science Foundation (NSF CHE-0544829 for financial support and Dr. Nikolai Tsvetkov for low-temperature NMR spectroscopy studies and Prof. D. Mindiola for a useful oxidant.


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How low can you go? The title [(PNP)Ni]+ complex is not a T-shaped d8 cation. Rather, it has an electrophilic NiII center bound to one of the Si[BOND]C bonds, stretching it by nearly 0.2 Å. This example shows that there are limits to how unsaturated NiII centers can be.

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