Synthesis and structural analysis of titanium-μ-dinitrogen complex supported by di-anionic guanidinate ligands  

作　　者：Botao Wu Rui Feng Zhu-Bao Yin Haihan Yan Xueli Wang Gao-Xiang Wang Junnian Wei Zhenfeng Xi 

机构地区：[1]Key Laboratory of Bioorganic Chemistry and Molecular Engineering,Ministry of Education and Beijing National Laboratory for Molecular Science,College of Chemistry,PekingUniversity,Beijing100871,China

出　　处：《Science China Chemistry》2023年第3期755-759,共5页中国科学（化学英文版）

基　　金：supported by the Basic Science Center of Transformation Chemistry of Key Components of Air, the National Natural Science Foundation of China (21988101);supported by the High-performance Computing Platform of Peking University

摘　　要：The synthesis,characterization,and theoretical studies of titanium-μ-N_(2) complexes with di-anionic guanidinate ligands were reported as the first example of its kind.Thus,with(Me_(3)Si)_(2)N-guanidinate ligands,the mono-anionic guanidinate-supported titanium-μ-N2complex 1 was obtained.Then,reduction of 1 with potassium afforded the di-anionic guanidinate-supported titanium-μ-N_(2) complex 2 via cleavage of one N–Si bond of the(Me3Si)2N substituents in 1,changing the guanidinate ligands automatically from mono-anionic to di-anionic and remarkably lengthening the bond length of theμ-N_(2).Characteristic studies and DFT calculations were performed to reveal that the di-anionic guanidinate ligands stabilized the geometry of 2 and increased the charge density on the bridging dinitrogen.

关 键 词：dinitrogen complex di-anionic guanidinate ligand TITANIUM 

分 类 号：O641.4[理学—物理化学]