“…The unified scale 31 was used as a primary reference based on the 1 H resonance of TMS in a dilute solution (volume fraction < 1%) of chloroform ((CH3)4Si 1 H, 13 C = 0). The physical and spectroscopic properties are in agreement with previous reports: 2, 32,33 3, 34-36 5, 37 7, 38 10, 39 11, 39 13, 40 15, 41 17, 38,42,43 19, 44 21, 45 26a, 16 26b, 16 27, 16 29a, 46 29b, 46 31, 47 33, 48 and 41. 49,50 Representative Procedure.…”