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

Table 6

Inter-molecular hydrogen bonds present in DNA-ZnL₂.

Type	Donor	Donor atom	Acceptor	Acceptor atom	d (H···A) (Å)	D (X⋯A) (Å)	q (X−H⋯A) (^°)
C–H⋯N	ZnL2	C	Adenine	N6	2.437	3.450	153.6
C–H⋯N	ZnL2	C	Adenine	N7	2.711	3.471	126.2
C–H⋯N	ZnL2	C	Adenine	N7	2.619	2.960	97.09
C–H⋯N	ZnL2	C	Adenine	N6	2.646	3.433	128.3
C–H⋯N	ZnL2	C	Adenine	N7	2.444	2.960	107.0
C–H⋯O	ZnL2	C	Adenine	O2P	2.943	3.270	97.5
C–H⋯O	ZnL2	C	Adenine	O2P	2.853	3.270	102.5
C–H⋯O	ZnL2	C	Guanine	O5	2.982	3.802	134.6
C–H⋯O	ZnL2	C	Guanine	O3	2.790	3.539	127.6
C–H⋯O	ZnL2	C	Adenine	O2P	1.746	2.389	114.5
C–H⋯O	ZnL2	C	Thymine	O4	2.619	3.645	162.9
C–H⋯N	ZnL2	C	Adenine	N6	2.479	2.919	103.7
C–H⋯N	ZnL2	C	Adenine	N7	2.660	3.302	118.7
C–H⋯O	ZnL2	C	Thymine	O4	2.974	3.480	109.8