Table 3.

¹H chemical shift in ppm (observed and calculated) of H-1, M-1, Br-1, Cl-1.

	Experimental				Theoretical
	H-1	M-1	Br-1	Cl-1	H-1	M-1	Br-1	Cl-1
H (8)	7.94	7.90	7.95	7.96	9.96	10.14	9.51	9.96
H (7)	7.80	7.74	7.79	7.81	9.70	9.33	9.46	8.94
H (6)	7.69	7.64	7.71	7.72	9.61	9.46	9.84	9.21
H (5)	7.91	7.84	7.94	7.95	9.61	9.90	10.02	10.23
R-(3)	5.56	2.10	-	-	7.22	4.03	-	-
NH	7.60	6.83	7.53	7.55	6.16	6.05	6.37	6.37
H(a)	2.76	3.14	3.25	3.28	3.72	3.26	4.33	4.36