Table 2. Comparison between some geometrical parameters (Å) in the chelate ring for HL and NaL .

Note that the numbering of atoms in the HL structure has brought into accordance with the numbering in the published structure.

Bond	NaL	HL	Δ
C14—O5	1.252 (3)	1.314 (2)	0.062
C9—C14	1.442 (3)	1.382 (2)	0.06
C8—C9	1.439 (3)	1.448 (2)	0.009
C8—O6	1.237 (3)	1.239 (2)	0.02
C4—C8	1.528 (3)	1.514 (2)	0.014