Structural consequences of the prohibition of hydrogen bonding in copper-guanidine systems.
Structural consequences of the prohibition of hydrogen bonding in copper-guanidine systems.
复制标题
铜-胍体系中禁止氢键的结构后果。
作者：
S. Oakley;M. Coles;P. Hitchcock
本文报道了N-取代双环胍负载铜(I)配合物的合成和结构。N-甲基取代双环1，3，4，6，7，8-hexahydro-1-methyl-2H-pyrimido[1，2-a]pyrimidine(HppMe)与氯化铜(I)反应生成离子对[Cu(HppMe)(2)][CuCl2](1)，这是一种罕见的含有无载体的铜…铜相互作用的化合物。然而，与CuI的类似反应得到了分子Mu，Mu-二卤桥联二聚体[Cui(HppMe)](2)(2)。在氮上包括三甲基硅基取代基提供了一个足够空间阻碍的环境来支持CuCL(hppSiMe(3))(3)中的两个配位的铜中心。对化合物1-3进行了充分的表征，包括单晶X-射线衍射研究。
The synthesis and structure of copper(I) complexes supported by N-substituted bicyclic guanidines is described. The N-methyl-substituted bicyclic guanidine 1,3,4,6,7,8-hexahydro-1-methyl-2H-pyrimido[1,2-a]pyrimidine (hppMe) reacted with copper(I) chloride to afford the ion-pair [Cu(hppMe)(2)][CuCl(2)] (1), a rare example of a compound containing an unsupported Cu...Cu interaction. The analogous reaction with CuI, however, afforded the molecular mu,mu-dihalo-bridged dimer [CuI(hppMe)](2) (2). Inclusion of a trimethylsilyl substituent at nitrogen provided a sufficiently sterically encumbered environment to support a two coordinate copper center in CuCl(hppSiMe(3)) (3). Compounds 1-3 have been fully characterized, including single-crystal X-ray diffraction studies.