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- Title
Synthesis, Structure and DNA-Binding Studies of Oxamido-Bridged Binuclear Copper(II) Complex: [Cu(heap)](bipy)(ClO).
- Authors
Yu Yu; Xiao-Wen Li; Lu-Yan Jiang; Yan-Tuan Li; Zhi-Yong Wu; Cui-Wei Yan
- Abstract
A new μ-oxamido-bridged copper(II)-copper(II) binuclear complex with formula of [Cu(heap)](bipy)(ClO), where Hheap and bipy are N,N′-bis( N-hydroxyethylaminopropyl)-oxamide and 4,4′-bipyridine, respectively, has been synthesized and characterized by elemental analyses, molar conductivity measurement, IR and electronic spectra studies, and single-crystal X-ray diffraction. The single-crystal X-ray analysis reveals that the complex has two embedded inversion centers at the mid-points of the C6-C6 bond of the oxamido group and the C7-C7 bond of the 4,4′-bipyridine, respectively [symmetry code: (i) 2− x, 1− y, 1− z; (ii) =2− x, − y, 1− z]. Copper(II) atom is in a square-planar coordination geometry. The Cu···Cu separation through the oxamido birdge is 5.1430(8) Å. The bridging ligand (heap) adopts a bis-tetradentate trans conformation. A one-dimensional hydrogen bonding supramolecular structure parallel to the [2 1 0] direction is found in the crystal. The interaction of the binuclear copper(II) complex with herring sperm DNA ( HS-DNA) was investigated by using absorption and emission spectra, electrochemical techniques and viscometry. The results suggest that the binuclear copper(II) complex interacts with HS-DNA by electrostatic interaction with intrinsic binding constant of 1.54 × 10 M. Graphical Abstract: A new µ-oxamido-bridged copper(II)-copper(II) binuclear has been synthesized and characterized by single-crystal X-ray diffraction. The interaction of the binuclear copper(II) complex with herring sperm DNA (HS-DNA) was investigated.[Figure not available: see fulltext.]
- Subjects
COPPER-cobalt-manganese alloys; COPPER compounds; COPPER spectra; METAL complexes; INFRARED spectra; ELECTROCHEMICAL analysis
- Publication
Journal of Chemical Crystallography, 2011, Vol 41, Issue 7, p959
- ISSN
1074-1542
- Publication type
Article
- DOI
10.1007/s10870-011-0025-7