If an equimolar mixture of and B(C6F5)3 is mixed with 1 bar of the gas N2O in bromobenze...

If an equimolar mixture of and B(C₆F₅)₃ is mixed with 1 bar of the gas N₂O in bromobenzene solution, a white product is formed in good yield. A variety of NMR evidence has been gathered on the product: there is a single ³¹P NMR resonance; ¹¹B and ¹⁹F NMR are consistent with a 4-coordinate boron atom; and ¹⁵N NMR indicates two nonequivalent nitrogen atoms. In addition, no gas is released in the reaction.

a. Suggest the role of N₂O in this reaction.

b. Propose a structure of the product. (See E. Otten, R. C. Neu, D. W. Stephan, J. Am. Chem. Soc. , 2009 , 131 , 9918.)