Two Cu(Ⅱ)and Co(Ⅱ)-based Coordination Polymers Based on the N,S-donor Ligand:Crystal Structures and Anticancer Activity Evaluation

Two new Cu(II)and Co(II)-based coordination polymers with the chemical formulae of{Cu(L)2]·DMF}n(1)and{[Co(L)2]·2DMF}n(2)have been successfully constructed from a pyridine-substituted N-heterocyclic thioamide ligand,namely[3,4?-bipyridine]-2?-thiol(HL).Complex 1 is composed of two identical coordination networks with dia topology interpenetrating into each other,and shows 1-D microporous channels along the a axis.Complex 2 is assembled by 2-D square-grid layers stacked in an eclipsed fashion to give 1-D large square channels along the b axis.CCK-8 was used for the detection of cancer cells.Results indicated that compound 1 exhibited stronger anti-cancer activity than compound 2 on the H1650 cancer cells.The Annexin V-FITC/PI was recommended for cancer cell apoptosis,and the western blot was applied for the detection of PI3K/AKT pathway activation.