Table 2.

Observed hydrogen bonds for studied complexes 1 and 2 (Å, °).

D–H···A	D–H	H···A	D···A	D–H···A
1
O4–H4W···O3 i	0.950(5)	1.730(6)	2.678(2)	174.83(3)
O4–H5W···O1 ii	0.954(4)	1.705(6)	2.655(2)	173.56(2)
2
C7–H7A···O2 iii	0.950(4)	2.641(4)	3.413(5)	138.70(2)

Note: Symmetry codes: (i) x, −y+1, z+1/2; (ii) −x, y, −z+1/2; (iii) x, y+1, z.