Synthesis of Silylyne Platinum Complexes and Their Application to Synergetic Activation of Small Molecules

硅与过渡金属原子之间具有多个键的过渡金属配合物因其独特的结构和反应性而受到人们的关注。硅-金属双键配合物（硅烯配合物）的报道较多，而硅-过渡金属三键配合物（硅烷配合物）的例子非常有限，因此硅烷配合物的性质尚未得到详细的阐明。本研究以溴化硅炔配合物为前驱体，研究了阳离子硅炔配合物的合成。然而，溴离子萃取剂处理溴硅炔配合物导致起始配合物分解，无法观察到预期的阳离子硅炔配合物。我们还合成了一种由Lewis碱配位的新型阳离子Si(I)，这将是一种很有希望的阳离子硅烷配合物的起始材料。

Transition metal complexes with multiple bonds between silicon and transition metal atoms have attracted attention because of their unique structures and reactivity. There have been a number of reports on the silicon-metal doubly bonded complexes (silylene complexes), whereas examples of complexes with silicon-transition metal triple bonds (silylyne complexes) are very limited, and thus the properties of silylyne complexes have not been elucidated in detail.In this study, synthesis of cationic silylyne complexes was investigated by using a bromosilylene complex as the synthetic precursor. However, treatments of the bromosilylene complex with bromide ion abstraction reagents resulted in the decomposition of the starting complex, and the expected cationic silylyne complex could not be observed. We have also synthesized a novel cationic Si(I) species coordinated by Lewis bases, which would be a promising starting material for the cationic silylyne complexes.