Table 1.

¹¹B and ¹⁹F NMR Data for R₃N–BH₂NTf₂ Complexes 12 and 13^a

entry	R3N		δ 11B, ppm	δ 19F, ppm	12:13 ratio at equilibriumb
1	Me3N	12a 13a	−3.7 4.0	−69.2 −77.6, −79.1	7:1
2	Et3N	12b 13b	−7.4 0.7	−68.9 −76.7, −79.1	1:4.7
3	(i-Pr)2NEt	12c 13c	ND 1.2	−68.4 −77.0, −79.1	<1:25
4	p-MeBnNMe2	12d 13d	−3.2 4.0	−69.0 −76.6, −79.1	4.2:1
5c		12e 13e	−4.6 −0.6	−69.2 −76.7, −78.7	1:2.6

^aConditions: 1:1 R₃N–BH₃:Tf₂NH, CD₂Cl₂, rt.

^bMonitored up to 2–14 days at rt.

^cIn d₈-PhMe.