| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1340241 | Polyhedron | 2009 | 8 Pages |
The synthesis, as well as chemical and structural characterization, of 1-(p-toluenesulfonyl)cytosine (1) and its dinuclear complexes of the composition Pd2(1-TosC−–N3,N4)4 (3) and Pd2(1-TosC−–N3,N4)2DMSO2Cl2 (4) by means of ESI-MS, IR, 1H NMR and X-ray single crystal analysis are described. Ligand 1 exists in the preferred aminooxo tautomeric form, while both dinuclear complexes reveal the presence of the iminooxo form of the ligand, where 1-TosC− stands for the anion of the cytosine derivative of 1, bridging two palladium atoms. Complex 3 has a paddlewheel structure with two square-planar coordination spheres, consisting of four N atoms each, mutually parallel and perpendicular to the interpalladium vector. Complex 4 is characterized by two mutually parallel square-planar coordination spheres consisting of two nitrogens, sulfur from the solvent molecule and a chloride. A feasible chemical route for the formation of 3 and 4via the kinetically favoured mononuclear complex Pd(1-TosC–N3)2Cl2 (2) is proposed, based on the IR, 1H NMR, mass spectrometry, elemental analysis and X-ray structure analysis data.
Graphical abstractThe synthesis and characterization of 1-(p-toluenesulfonyl)cytosine (1), and its dinuclear cytosinato complexes Pd2(1-TosC−–N3,N4)4 (3) and Pd2(1-TosC−–N3,N4)2DMSO2Cl2 (4) are described. Complex 3 has an intriguing paddlewheel structure with two parallel square-planar coordination spheres, consisting of four N atoms each.Figure optionsDownload full-size imageDownload as PowerPoint slide
