Abstract:The square planar ring [PhC(NtBu)2SiNi(C5Me5)]2 was obtained by an insertion of a Ni(0) precusor in the Si–C bond of the silylene [PhC(NtBu)2Si(C5Me5)].
Tetranuclear cores (M–E)2 of transition metals (M) and tetrylenes (EII = Si, Ge, Sn) are key motifs in homogeneous and heterogeneous catalysis. They exhibit a continuum of M–M and E–E bonding within the inorganic core that leads to a variety of structures for which there are no specific synthetic methods. Herein, we report a series of highly reduced [Ni0GeII]2 squares solely stabilized by bulky terphenyl (C6H3‐2,6‐Ar2) ligands, for which we provide complementary and high‐yielding syntheses. Reactivity studies with common Lewis bases (carbene and CO) evince that the structure of the (M–E)2 core can be finely tuned. We have investigated this core modification by computational means, offering a rationale to better understand the continuum of bonding across these clusters.
Tetranuclear cores (M–E)2 of transition metals (M) and tetrylenes (EII = Si, Ge, Sn) are key motifs in homogeneous and heterogeneous catalysis. They exhibit a continuum of M–M and E–E bonding within the inorganic core that leads to a variety of structures for which there are no specific synthetic methods. Herein, we report a series of highly reduced [Ni0GeII]2 squares solely stabilized by bulky terphenyl (C6H3‐2,6‐Ar2) ligands, for which we provide complementary and high‐yielding syntheses. Reactivity studies with common Lewis bases (carbene and CO) evince that the structure of the (M–E)2 core can be finely tuned. We have investigated this core modification by computational means, offering a rationale to better understand the continuum of bonding across these clusters.
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