Synthesis, Spectroscopic Characterization and Biological Activities of Transition Metal Complexes Derived from a Tridentate Schiff Base

Table 5

Inter-molecular hydrogen bonds present in DNA-NiL₂.

Type	Donor	Donor atom	Acceptor	Acceptor atom	d (H⋯A) (Å)	D (X⋯A) (Å)	q (X−H⋯A) (^°)
C–H⋯O	NiL2	C	Thymine	O4	2.943	3.760	131.6
C–H⋯O	NiL2	C	Adenine	O2P	2.899	3.651	126.1
C–H⋯O	NiL2	O	Guanine	O1P	1.745	2.387	121.1
C–H⋯O	NiL2	O	Guanine	O2P	2.008	2.874	149.0
C–H⋯O	NiL2	C	Adenine	O2P	2.951	3.177	92.36
C–H⋯O	NiL2	C	Adenine	O2P	2.902	3.622	125.4
C–H⋯O	NiL2	C	Thymine	O4	2.343	2.963	115.7
C–H⋯O	NiL2	C	Guanine	O2P	1.755	2.692	144.8
C–H⋯O	NiL2	C	Adenine	O2P	2.880	3.115	92.68
C–H⋯O	NiL2	C	Thymine	O4	2.514	3.028	108.8
C–H⋯N	NiL2	C	Adenine	N6	2.885	3.905	161.5