Aweke Bamlaku Semagne, Yu Cheng-Han, Zhi Minna, Chen Wen-Ching, Yap Glenn P A, Zhao Lili, Ong Tiow-Gan
Institute of Chemistry, Academia Sinica, Taipei, Taiwan, ROC.
Department of Applied Chemistry, National Yang Ming Chiao Tung University, Hsinchu, Taiwan, ROC.
Angew Chem Int Ed Engl. 2022 Jun 13;61(24):e202201884. doi: 10.1002/anie.202201884. Epub 2022 Mar 30.
Carbones are divalent carbon(0) species that contain two lone pairs of electrons. Herein, we have prepared the first known stable and isolable free bis-(carbone) pincer framework with a well-defined solid-state structure. This bis-(carbone) ligand is an effective scaffold for forming monometallic (Ni and Pd) and trinuclear heterometallic complexes with Au-Pd-Au, Au-Ni-Au, and Cu-Ni-Cu configurations. Sophisticated quantum-theoretical analyses found that the metal-metal interactions are too weak to play a significant role in upholding these multi-metallic configurations; rather, the four lone pairs of electrons within the bis-(carbone) framework are the main contributors to the stability of the complexes.
卡宾是含有两对孤对电子的二价碳(0)物种。在此，我们制备了第一个已知的具有明确固态结构的稳定且可分离的游离双（卡宾）钳形骨架。这种双（卡宾）配体是用于形成具有Au-Pd-Au、Au-Ni-Au和Cu-Ni-Cu构型的单金属（Ni和Pd）和三核异金属配合物的有效支架。复杂的量子理论分析发现，金属-金属相互作用太弱，无法在维持这些多金属构型中发挥重要作用；相反，双（卡宾）骨架内的四对孤对电子是配合物稳定性的主要贡献者。
