posted on 2014-10-13, 00:00authored byKrzysztof Budny-Godlewski, Dominik Kubicki, Iwona Justyniak, Janusz Lewiński
Reactions of diethylzinc with TEMPO
were investigated. Dropwise
addition of 1 equiv of TEMPO to Et2Zn at −10 °C
leads to the nitroxide complex EtZn(TEMPO) in high yield, whereas
upon addition of 2 equiv of TEMPO the corresponding homoleptic nitroxide
compound Zn(TEMPO)2 is formed. Diffusion ordered NMR spectroscopy
experiments revealed that both zinc nitroxide compounds exist in monomeric
forms in solution, while single-crystal X-ray diffraction confirmed
their dimeric structure in the solid state.