Synthesis and reactivity of phospha-stannenes and -germenes Matthew Reveley 1 , Joey Feld 1 , Eric S. Yang 1 , Diana Temerova 2 , Jose M. Goicoechea 1 1 University of Oxford, UK, 2 University of Eastern Finland Despite the attractiveness of ammonia as an inexpensive chemical feedstock, its activation remains challenging, particularly for transition metals.1 By contrast, a number of main group systems can perform this transformation, including T-shaped phosphorus compounds and those containing heavier-element multiple bonds.2 Our group recently reported the synthesis of the first example of a phosphanyl-phosphagallene (RP=GaR), and demonstrated contrasting bond-activation pathways towards protic or hydridic E−H bonds (E=N, O, P, Si), including the reversible activation of ammonia.3 Following on from this report, we were interested in the reactivity of double bonds between phosphorus and the heavier tetrel elements (E14 = Ge, Sn) in small-molecule activation reactions. Here we will present the results of our studies into the synthesis of novel Ge=P and Sn=P bonds and their reactivity towards a range of E−H bond containing substrates (E = N, O, Si) (Figure 1).
Figure 1. The activation of E−H bonds (E= N, O, Si) by Ge=P and Sn=P bonds is investigated. References 1. Betore, M. P.; Casado, M. A.; García-Orduna, P.; Lahoz, F. J.; Polo, V.; Oro, L. A. Organometallics 2016, 35, 720-731. 2. Robinson, T. P.; Rosa, D. M. D.; Aldridge, S.; Goicoechea, J. M. Chem. Int. Ed. 2015, 54, 13758-13763; 3. Abbenseth, J.; Townrow, O. P. E.; Goicoechea, J. M. Angew. Chem. Int. Ed. 2021, 60, 23625-23629; 4. Sharma, M. K.; Wölper, C.; Haberhauer, G.; Schulz, S. Angew. Chem. Int. Ed. 2021, 60, 6784-90.
5. Wilson, D. W. N.; Feld, J.; Goicoechea, J. M. Chem. Int. Ed. 2020, 59, 20914-20918; 6. Feld, J.; Wilson, D. W. N.; Goicoechea, J. M. Angew. Chem. Int. Ed. 2021, 60, 22057-22061.
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