Synthesis, Structure, DNA Interaction, and SOD Activity of Three Nickel(II) Complexes Containing L-Phenylalanine Schiff Base and 1,10-Phenanthroline

Table 2

Selected bond lengths (Å) and bond angles (°) for complexes 1, 2, and 3.

Complex 1
Ni(1)–O(3)	1.990(2)	Ni(1)–N(1)	1.991(3)	Ni(1)–O(1)	2.068(3)
Ni(1)–N(3)	2.075(3)	Ni(1)–N(2)	2.116(3)	Ni(1)–O(4)	2.117(3)
O(3)–Ni(1)–N(1)	92.43(11)	O(3)–Ni(1)–O(1)	173.63(10)	N(1)–Ni(1)–O(1)	81.29(11)
O(3)–Ni(1)–N(3)	93.55(11)	N(1)–Ni(1)–N(3)	172.77(11)	O(1)–Ni(1)–N(3)	92.64(11)
O(3)–Ni(1)–N(2)	91.84(11)	N(1)–Ni(1)–N(2)	96.26(12)	O(1)–Ni(1)–N(2)	87.84(10)
N(3)–Ni(1)–N(2)	79.50(12)	O(3)–Ni(1)–O(4)	89.99(11)	N(1)–Ni(1)–O(4)	92.72(11)
O(1)–Ni(1)–O(4)	91.34(11)	N(3)–Ni(1)–O(4)	91.33(11)	N(2)–Ni(1)–O(4)	170.75(11)
Complex 2
Ni(1)–N(1)	1.987(3)	Ni(1)–O(3)	1.997(3)	Ni(1)–O(1)	2.068(3)
Ni(1)–N(3)	2.083(3)	Ni(1)–O(4)	2.100(3)	Ni(1)–N(2)	2.129(3)
N(1)–Ni(1)–O(3)	89.99(12)	N(1)–Ni(1)–O(1)	81.80(12)	O(3)–Ni(1)–O(1)	171.26(10)
N(1)–Ni(1)–N(3)	175.09(12)	O(3)–Ni(1)–N(3)	94.34(11)	O(1)–Ni(1)–N(3)	93.75(11)
N(1)–Ni(1)–O(4)	90.64(13)	O(3)–Ni(1)–O(4)	92.52(12)	O(1)–Ni(1)–O(4)	90.56(12)
N(3)–Ni(1)–O(4)	91.50(13)	N(1)–Ni(1)–N(2)	98.70(12)	O(3)–Ni(1)–N(2)	90.17(11)
O(1)–Ni(1)–N(2)	88.13(11)	N(3)–Ni(1)–N(2)	78.99(12)	O(4)–Ni(1)–N(2)	170.29(12)
Complex 3
Ni(1)–N(1)	2.000(6)	Ni(1)–O(3)	2.003(5)	Ni(1)–O(1)	2.053(5)
Ni(1)–N(3)	2.076(6)	Ni(1)–N(2)	2.131(6)	Ni(1)–O(5)	2.146(5)
Ni(2)–N(4)	1.982(6)	Ni(2)–O(8)	1.992(5)	Ni(2)–O(6)	2.059(5)
Ni(2)–N(6)	2.075(7)	Ni(2)–O(10)	2.113(5)	Ni(2)–N(5)	2.116(6)
Ni(3)–N(7)	1.995(7)	Ni(3)–O(13)	2.008(5)	Ni(3)–O(11)	2.056(6)
Ni(3)–N(8)	2.084(7)	Ni(3)–O(15)	2.099(6)	Ni(3)–N(9)	2.114(7)
N(1)–Ni(1)–O(3)	92.3(2)	N(1)–Ni(1)–O(1)	82.0(2)	O(3)–Ni(1)–O(1)	173.3(2)
N(1)–Ni(1)–N(3)	169.9(2)	O(3)–Ni(1)–N(3)	93.2(2)	O(1)–Ni(1)–N(3)	92.9(2)
N(1)–Ni(1)–N(2)	92.6(2)	O(3)–Ni(1)–N(2)	96.1(2)	O(1)–Ni(1)–N(2)	87.8(2)
N(3)–Ni(1)–N(2)	78.4(2)	N(1)–Ni(1)–O(5)	95.3(2)	O(3)–Ni(1)–O(5)	90.31(18)
O(1)–Ni(1)–O(5)	86.70(19)	N(3)–Ni(1)–O(5)	93.2(2)	N(2)–Ni(1)–O(5)	169.7(2)
N(4)–Ni(2)–O(8)	92.7(2)	N(4)–Ni(2)–O(6)	81.3(2)	O(8)–Ni(2)–O(6)	174.0(2)
N(4)–Ni(2)–N(6)	171.7(2)	O(8)–Ni(2)–N(6)	93.3(2)	O(6)–Ni(2)–N(6)	92.7(2)
N(4)–Ni(2)–O(10)	93.9(2)	O(8)–Ni(2)–O(10)	90.41(19)	O(6)–Ni(2)–O(10)	89.3(2)
N(6)–Ni(2)–O(10)	91.6(2)	N(4)–Ni(2)–N(5)	95.0(2)	O(8)–Ni(2)–N(5)	90.8(2)
O(6)–Ni(2)–N(5)	90.5(2)	N(6)–Ni(2)–N(5)	79.3(3)	O(10)–Ni(2)–N(5)	170.9(3)
N(7)–Ni(3)–O(13)	91.9(2)	N(7)–Ni(3)–O(11)	80.3(3)	O(13)–Ni(3)–O(11)	171.9(2)
N(7)–Ni(3)–N(8)	169.6(3)	O(13)–Ni(3)–N(8)	96.3(2)	O(11)–Ni(3)–N(8)	91.6(2)
N(7)–Ni(3)–O(15)	94.9(3)	O(13)–Ni(3)–O(15)	89.3(2)	O(11)–Ni(3)–O(15)	89.1(2)
N(8)–Ni(3)–O(15)	91.6(3)	N(7)–Ni(3)–N(9)	95.4(3)	O(13)–Ni(3)–N(9)	91.4(2)
O(11)–Ni(3)–N(9)	91.6(2)	N(8)–Ni(3)–N(9)	78.1(3)	O(15)–Ni(3)–N(9)	169.6(3)