Elemental Reactions of Vanadium Hydrides (V-H) toward CO, CO2, and Alkynes

Lei Zheng; Xu-Zhou Li; Feng Liu; Dan-Dan Zhai; Zhang-Jie Shi

doi:10.1002/cjoc.70193

Chinese Journal of Chemistry ›› 2025, Vol. 43 ›› Issue (22) : 2957 -2962. DOI: 10.1002/cjoc.70193

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Elemental Reactions of Vanadium Hydrides (V-H) toward CO, CO₂, and Alkynes

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Abstract

This study investigates elemental reactions of vanadium hydride {[^DippN₂NCH₂C₆H₄]VH}₂{K}₂ (1) toward CO, CO₂, and alkynes. Exposure of 1 to CO at −78 °C yielded the dicarbonyl divanadium complex {[^DippN₂NBn]V(CO)₂}₂{K}₂ (2), while heating at 100 °C afforded the CO homologation product {[^DippN₂NCH₂C₆H₄]V(THF)}₂(μ-κ²-C₂H₂O₂) (3). Reaction of 1 with CO₂ generated the dinuclear vanadium formate complex {[^DippN₂NCH₂C₆H₄]V(HCOO)}₂{K}₂ (5). Treatment of 1 with methyl phenylpropiolate produced the vanadium enolate complex {[^DippN₂NCH₂C₆H₄C(Ph)C(H)COOMe]V}{K(THF)₂} (6). This work demonstrates new observations of sequential insertion of CO or activated alkynes into both V–H and V-C_Ar bonds, elucidating fundamental reactivity paradigms for vanadium hydrides.

Keywords

N ligand / Hydrides / Vanadium / Carbon monoxide / Carbon dioxide / Unsaturated substrates / Migratory insertion

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Lei Zheng, Xu-Zhou Li, Feng Liu, Dan-Dan Zhai, Zhang-Jie Shi. Elemental Reactions of Vanadium Hydrides (V-H) toward CO, CO₂, and Alkynes. Chinese Journal of Chemistry, 2025, 43(22): 2957-2962 DOI:10.1002/cjoc.70193