the dicopper(I) complexes [(DPFN)Cu2 (μ,η1 : η1 -MeCN)][X]2 (X=weakly coordinating anion, NTf2 (1 a), FAl[OC6 F10 (C6 F5 )]3 (1 b), Al[OC(CF3 )3 ]4 (1 c)) was replaced by white phosphorus (P4 ) or yellow arsenic (As4 ) to yield [(DPFN)Cu2 (μ,η2 : η2 -E4 )][X]2 (E=P (2 a-c), As (3 a-c)). The molecular structures in the solid state reveal novel coordination modes for E4 tetrahedra bonded to coinage metal
二
铜(I)配合物中的桥联 MeCN
配体 [(DPFN)Cu2 (μ,η1 : η1 -MeCN)][X]2 (X=弱配位阴离子, NTf2 (1 a), FAl[OC6 F10 (C6 F5) )]3 (1 b)、Al[OC(
CF3 )3 ]4 (1 c)) 被
白磷 (P4 ) 或黄
砷 (As4 ) 取代,得到 [(DPFN)Cu2 (μ,η2 : η2 - E4 )][X]2 (E=P (2 ac), As (3 ac))。固态分子结构揭示了与造币
金属离子键合的 E4 四面体的新颖配位模式。实验数据和量子
化学计算提供了有关配位 E4 四面体中键合扰动的信息。与 N-杂环卡宾 (NHC) 的反应导致 E4 四面体被替换,释放出 P4 或 As4,并形成 [(DPFN)Cu2 (μ,η1 : η1 -Me NHC)][X]2 (4 a,b ) 或打开一个 EE 键,导致 [(DPFN)Cu2