“…(34) (17.9) [t] (32.8) (17.9) [t] (10.5) [t,v] (20.6) [t,v] (7.2) [t,v] (3.5) [a] Chemical shift δ(C) relative to TMS; coupling constants n J (PC) (12, 14 Ϫ 16, 18, 22), [D 6 ]acetone (11,13), CD 3 OD (17, 17 · HCl), C 6 H 6 (19); [D 6 ]DMSO (1Ϫ4, 6, 7, 9). Ϫ [c] For an indication of the carbon atoms see Figure 1a.…”