A Dinitrogen Divanadium Complex Supported by a Trisamidophosphine Ligand
Dong-Ping Chen , Yun-Shu Cui , Bo-Han He , Feng Liu , Dan-Dan Zhai , Zhang-Jie Shi
Chinese Journal of Chemistry ›› 2025, Vol. 43 ›› Issue (1) : 39 -45.
A Dinitrogen Divanadium Complex Supported by a Trisamidophosphine Ligand
Comprehensive Summary:The reaction between tripodal trisamidophosphine ligand H 3PN 3 Ar and V(Mes) 3(THF) (Mes = mesityl) yields the vanadium(III) complex (PN 3 Ar)V ( 1) with an open site in the axial position, which could coordinate with THF, pyridine, and NH 3 to form the corresponding adducts ( 2– 4). The vanadium(III) center is redox-active, as demonstrated by cyclic voltammetry methods and chemical oxidation or reduction. Notably, a novel dinitrogen divanadium complex with a bridging N 2 ligand, {K(THF)} 2{[PN 3 Ar]V} 2( µ-N 2) ( 6), was synthesized via treatment of 1 with 1 equivalent of potassium naphthalenide in THF under a N 2 atmosphere. The electronic structures and binding properties of 6 are evaluated and discussed based on its DFT calculations. Additionally, these vanadium complexes ( 1, 5, 6) can serve as catalysts for the conversion of N 2 into N(SiMe 3) 3 in the presence of reductants and Me 3SiCl.
Nitrogen fixation / Dinitrogen Catalytical Conversion / Dinitrogen Divanadium Complex / N, P ligands / Tripodal ligands
2024 SIOC, CAS, Shanghai, & WILEY-VCH GmbH
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