Antioxidant and Antivenom Potential of an Essential Oil, 4-(2-Oxo-propyl)-cyclopentane-1,3-dione, and Allantoin Derived from the Polyherbal Combination of Aristolochia indica L. and Piper nigrum L.

Table 12

Distance between hydrogen acceptor and donor of compound W3.

D-H…A	d (D-H)	d (H…A)	d (D…A)	<(DHA)
N(1)-(1N)…O(2)#	10.87 (2)	1.98 (2)	2.829 (2)	167 (2)
N(2)-(2N)…O(3)#	20.82 (2)	2.13 (2)	2.923 (2)	160 (2)
N(3)-(3B)…O(3)#	30.86	2.23	2.9115 (19)	136.2
N(4)-(4A)…O(1)#	40.86	2.25	3.006 (2)	145.9
N(4)-(4B)…O(1)#	60.86	2.20	3.023 (2)	161.2
C(3)-(3A)…O(3)#	30.98	2.66	3.212 (2)	116.0

Symmetry transformations used to generate equivalent atoms: #1 −x + 1, −y, −z + 1 #2 −x + 1, y + 1/2, −z + 1/2 #3 x, y + 1, z #4 −x, y − 1/2, −z + 1/2 #5 x, −y + 1/2, z − 1/2 #6 −x, y + 1/2, −z + 1/2.