Synthesis of Amino Acid Schiff Base Nickel (II) Complexes as Potential Anticancer Drugs In Vitro

Table 1

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

Complex 1
Ni1-N1	2.008 (4)	Ni1-O3	2.009 (4)	Ni1–O1	2.066 (4)
Ni1–N3	2.082 (4)	Ni1–N4	2.129 (4)	Ni1–O4	2.132 (4)
N1-Ni1-O3	90.71 (17)	N1-Ni1-O1	81.23 (16)	O3-Ni1-O1	171.92 (16)
N1-Ni1-N3	176.51 (19)	O3-Ni1-N3	91.93 (17)	O1-Ni1-N3	96.15 (16)
N1-Ni1-N4	98.65 (17)	O3-Ni1-N4	91.28 (17)	O1-Ni1-N4	90.50 (16)
N3-Ni1-N4	79.02 (17)	N1-Ni1-O4	91.44 (17)	O3-Ni1-O4	86.55 (18)
O1-Ni1-O4	93.05 (18)	N3-Ni1-O4	90.99 (19)	N4-Ni1-O4	169.71 (18)
Complex 2
Ni1-N1	2.007 (6)	Ni1-O3	2.025 (5)	Ni1-O1	2.075 (5)
Ni1-N3	2.092 (6)	Ni1-N4	2.125 (5)	Ni1-O5	2.130 (4)
N1-Ni1-O3	90.4 (2)	N1-Ni1-O1	81.2 (2)	O3-Ni1-O1	171.42 (19)
N1-Ni1-N3	175.3 (2)	O3-Ni1-N3	92.2 (2)	O1-Ni1-N3	96.3 (2)
N1-Ni1-N4	97.0 (2)	O3-Ni1-N4	87.1 (2)	O1-Ni1-N4	95.74 (19)
N3-Ni1-N4	79.3 (2)	N1-Ni1-O5	92.4 (2)	O3-Ni1-O5	90.99 (19)
O1-Ni1-O5	87.46 (18)	N3-Ni1-O5	91.5 (2)	N4-Ni1-O5	170.5 (2)
Complex 3
Ni1–N1	1.979 (6)	Ni1–O3	2.005 (5)	Ni1–O1	2.043 (5)
Ni1-N3	2.080 (7)	Ni1-N4	2.110 (6)	Ni1-O4	2.126 (5)
Ni2-N5	1.988 (6)	Ni2-O7	1.997 (5)	Ni2-O5	2.033 (5)
Ni2-N (7)	2.087 (7)	Ni2-N8	2.093 (8)	Ni2-O8	2.121 (5)
N1–Ni1–O3	89.0 (2)	N1–Ni1–O1	81.4 (2)	O3–Ni1–O1	170.3 (2)
N1-Ni1-N3	172.3 (2)	O3-Ni1-N3	98.1 (2)	O1-Ni1-N3	91.3 (2)
N1-Ni1-N4	97.8 (2)	O3-Ni1-N4	89.2 (2)	O1-Ni1-N4	90.3 (2)
N3-Ni1-N4	79.4 (3)	N1-Ni1-O4	93.3 (2)	O3-Ni1-O4	86.3 (2)
O1-Ni1-O4	96.1 (2)	N3-Ni1-O4	90.2 (3)	N4-Ni1-O4	168.0 (2)
N5-Ni2-O7	89.1 (2)	N5-Ni2-O5	80.9 (2)	O7-Ni2-O5	169.8 (2)
N5-Ni2-N7	177.7 (2)	O7-Ni2-N7	92.7 (2)	O5-Ni2-N7	97.3 (2)
N5-Ni2-N8	99.2 (3)	O7-Ni2-N8	88.0 (3)	O5-Ni2-N8	91.7 (2)
N (7)-Ni2-N8	79.3 (3)	N5-Ni2-O8	93.0 (2)	O7-Ni2-O8	87.7 (2)
O5-Ni2-O8	94.7 (2)	N (7)-Ni2-O8	88.6 (3)	N8-Ni2-O8	167.0 (3)