Synthesis, Structure, and Alkyne Reactivity of a Dimeric (Carbene)copper(I) Hydride

The monomeric, two-coordinate carbene complex (IPr)CuO-t-Bu (1) (IPr = 1,3-bis(2,6-diisopropylphenyl)imidazol-2-ylidene) reacts readily with silanes
such as triethoxysilane, forming a dimeric copper(I)
hydride complex (2) with a very short copper−copper
distance. Hydrocupration of 3-hexyne by 2 affords a
monomeric copper(I) vinyl complex.

单核双配位卡宾配合物(IPr)CuO-叔丁基(1)（IPr即1,3-双(2,6-二异丙基苯基)咪唑-2-亚基，英文全称为1,3-bis(2,6-diisopropylphenyl)imidazol-2-ylidene）可与三乙氧基硅烷等硅烷快速发生反应，生成具有极短铜-铜间距的双核铜(I)氢化物配合物(2)。配合物2对3-己炔的氢铜化反应可得到单核铜(I)乙烯基配合物。