Table 3.

Atom-pair distances and angles of H-bond framework from HFS analysis.

S.No.	H-bond framework	H-bond length∗ (Å)	Angle (o) of H-bond framework
1	N7…H25–O14	1.846	154.8
2	N3…H18–N10	2.092	165.5
3	N10–H18…N3	2.092	165.5
4	N10–H17…O14	2.198	154.1
5	C12–O14…H17	2.198	139.0
6	N7…H16–C8	2.418	145.7
7	C12–O14…H16	2.516	145.3
8	N1…H19–C11	2.567	152.2
9	C12–O14…H21	2.603	154.1

^∗Van der Waals radii summation of H (1.17) and O (1.40)→2.57 Å & H (1.17) and N (1.50)→2.67 Å [38].