Steric control of Mg–Mg bond formation vs. N2 activation in the reduction of bulky magnesium diamide complexes
Literature Information
Rahul Mondal, Matthew J. Evans, Dat T. Nguyen, Thayalan Rajeshkumar, Laurent Maron, Cameron Jones
Reduction of the magnesium(II) diamide [Mg(TripNON)] (TripNON = 4,5-bis(2,4,6-triisopropylanilido)-2,7-diethyl-9,9-dimethyl-xanthene) with 5% w/w K/KI leads to a good yield of a dianionic dimagnesium(I) species, as its potassium salt, [{K(TripNON)Mg}2]. An X-ray crystallographic analysis shows the molecule to contain a very long Mg–Mg bond (3.137(2) Å). The formation of [{K(TripNON)Mg}2] contrasts with a previously reported reduction of a magnesium(II) complex incorporating a bulkier diamide ligand, which instead afforded a magnesium–dinitrogen complex. In the current study, [{K(TripNON)Mg}2] has been shown to be a viable reagent for the reductive activation of CO, H2 and N2O.
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![1,10-bis(3,5-dimethylphenyl)-12-hydroxy-4,5,6,7-tetrahydroiindeno[7,1-de:1',7'-fg][1,3,2]dioxaphosphocine 12-oxide structure 1,10-bis(3,5-dimethylphenyl)-12-hydroxy-4,5,6,7-tetrahydroiindeno[7,1-de:1',7'-fg][1,3,2]dioxaphosphocine 12-oxide structure](https://static.chemtradehub.com/structs/141/1412439-82-7-b9a9.webp)


