Abstract

Complexes [Zn(pbm)(5-hip)3] (1), [Zn(pbm)(5-nip)3] (2), [Mn(pbm)(H3btc)2(H2O)] (3) and [Mn(pbm)(5-nip)3] (4), where H2HIPA = 5-hydroxyisophthalic acid, H2nip = 5-nitroisophthalic acid, H3btc = trimesic acid and pbm (pyridine benzene chelate material) = 2-(2-pyridyl)benzimidazole, were identified via single-crystal XRD analyses. 1, 2 and 4 pertain to the monoclinic space group C2/c, while 3 belongs to the triclinic space group P①. The interplay of CT-DNA with those complexes was delineated using ultraviolet, fluorescence, and circular dichroism (CD) spectroscopy and viscosity measurements. Complexes 1, 2, 3 and 4 interact with CT-DNA in an electrostatic or grooving mode. We wish to offer a theory-wise foundation for developing anti-tumor medicines.

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