1 B20 1,2-dihydro-1,2-azaborinine 1.000 2 6OQ 2-ethyl-1,2-dihydro-1,2-azaborinine 0.750 3 B24 1-ethyl-1,2-dihydro-1,2-azaborinine 0.750 4 0PY Pyridine 0.714 5 PIP Piperidine 0.714