Chandrasekhar, Vadapalli ; Senapati, Tapas ; Clerac, Rodolphe (2009) Dinuclear copper (II) phosphonates containing chelating nitrogen ligands: synthesis, structure, magnetism and nuclease activity European Journal of Inorganic Chemistry, 2009 (12). pp. 1640-1646. ISSN 1434-1948
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Official URL: http://www3.interscience.wiley.com/journal/1222676...
Related URL: http://dx.doi.org/10.1002/ejic.200900035
Abstract
The reaction of Cu(ClO4)2·6H2O with RPO3H2 (R = cyclopentyl, isopropyl, trichloromethyl) in the presence of chelating nitrogen ligands bpya or bpy afforded dinuclear copper phosphonates [Cu2(μ 2-C5H9PO3)2(bpya)2(H2O)2] (H2O)4 (1), [Cu2(μ 2-C3H7PO3)2(bpya)2(H2O)2] (H2O)2 (2) and [Cu2(μ 2-CCl3PO3)2(bpy)2(MeOH)2] (H2O) (3) [bpya = 2,2'-bipyridylamine, bpy = 2,2'-bipyridine]. The molecular structures of these complexes reveal that they are isostructural and possess two copper centres that are bridged to each other by two isobidentate phosphonate ligands generating an eight-membered Cu2O4P2 ring. Magnetic studies on 2 reveal antiferromagnetic behaviour at low temperatures. Dinuclear complexes 1-3 were found to be excellent nucleases and can convert supercoiled pBR322 DNA form I into nick form II in only 30 min without the need for any external oxidant through a hydrolytic pathway.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to John Wiley and Sons, Inc. |
| Keywords: | Copper; Phosphorus; Magnetic Properties; Dinuclear Complex; N ligands |
| ID Code: | 9008 |
| Deposited On: | 29 Oct 2010 12:00 |
| Last Modified: | 29 Oct 2010 12:00 |
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