Activation of Small Molecules by Use of Metal Complexes Bearing New Tripodal Tetradentate Ligands

2017 Fiscal Year Final Research Report

• Project/Area Number: 15K05417
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Organic chemistry
• Research Institution: Gunma University
• Principal Investigator: Takeda Nobuhiro 群馬大学, 大学院理工学府, 准教授 (80304731)
• Project Period (FY): 2015-04-01 – 2018-03-31
• Keywords: 三脚型四座配位子 / シリル配位子 / チオエーテル配位子 / ホスフィン配位子 / 遷移金属錯体 / 小分子の活性化 / 触媒反応 / ヒドロシリル化反応

Outline of Final Research Achievements

We synthesized group 9-11 metal complexes bearing new PS3-type or SiS3-type tripodal tetradentate ligands, and revealed their structures, reactivity and catalytic activity. A rhodium complex bearing the SiS3-type ligand, [RhCl(C8H13){Si(C6H4-2-S-i-Pr)3}], catalyzed hydrosilylation of phenylacetylene to give the corresponding Z-alkene at room temperature. On the other hand, the reaction at 50 °C resulted in the formation of the corresponding E-alkene as a main product. It is interesting that the selectivity is changed by the reaction temperature. In addition, a rhodium(I) complex bearing the PS3-type ligand, [RhCl{P(C6H4-2-S-i-Pr)3}], readily reacted with O2 to afford the corresponding Rh-O2 complex. It is expected that the rhodium(I) complex can activate O2 molecule.

Free Research Field

有機元素化学，有機金属化学