1 09O 1-(pyridin-3-yl)-1,4-diazepane 1.000 2 09R 1-(6-bromopyridin-3-yl)-1,4-diazepane 0.929 3 09S 1-(6-bromo-5-ethoxypyridin-3-yl)-1,4-diazepane 0.765