Complexation of copper ion and nucleotides and catalytic hydrolysis of ATP by an octaaza macrocyclic ligand 3,6,9,17,20,23,29,30-octaazatricyclo[23,3,1,111,15] triaconta-1(29),11,13,15,25,27-hexaene
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The complexation of copper(II) ion and nucleotides by an octaaza macrocyclic ligand 3,6,9,17,20,23,29,30-octaazatricyclo [23,3,1,111,15]triaconta-1(29),11,13,15,25,27-hexaene (BPBD) has been studied by potentiometric titration. Catalytic hydrolysis of ATP promoted by protonated BPBD has been investigated and the influence of pH on rate enhancements have been determined by HPLC. In addition, the crystal structure of a dinuclear Cu(II) complex [BPBDCu2](ClO4)4·4DMF (1) and the preliminary structure of a binary complex H(x)BPBD-Tp (2) are reported. Complex 1 crystallizes in the triclinic system, space group P1, with a = 11.908(8), b = 12.851(1), c = 9.209(7) Å, α = 107.20(6) β = 101.85(6), γ = 68.84(6)°, and Z=2. Each copper(II) ion is coordinated by one pyridine nitrogen and three amino nitrogens, forming a square planar geometry.
author list (cited authors)
Lu, Q., Carroll, R. I., Reibenspies, J. H., Martell, A. E., & Clearfield, A.