Citation: Fu Hai WU, Bin SONG, Liang Nian JI. TERNARY COMPLEXES OF Cu (ATP) AND HETEROAROMATIC N BASE-ISOQUINOLINE AND BENZIMIDAZOLE:STABILITY CONSTANT AND STACKING EFFECT[J]. Chinese Chemical Letters, ;1993, 4(9): 809-812. shu

TERNARY COMPLEXES OF Cu (ATP) AND HETEROAROMATIC N BASE-ISOQUINOLINE AND BENZIMIDAZOLE:STABILITY CONSTANT AND STACKING EFFECT

Biotechnology Research Center, Zhongshan University Guangzhou 510275

Received Date: 1 March 1993

Fund Project: This work was supported by the Doctoral Program Foundation of Institution of High Education and Research Foundation of State Key Laboratory of Coordination Chemistry.

The stability constants of the binary complexes of Cu²⁺ with isoquinoline and benzimidazole as well as the ternary complexes of Cu(ATP) with the same ligands have been measured in aqueous solution spectrophotometrically and a strong stacking interaction between the heteroaromatic ring of the ligands and the purine moiety of ATP has been found.The fact of this stacking interaction is much stronger than that in the systems of Cu(ATP) with pyridine and imidazole shows that the stacking interaction increases with the size of the heteroaromatic ring of the ligands.
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