Chandrasekhar, Vadapalli ; Pandian, Balasubramanian Murugesa ; Azhakar, Ramachandran (2008) Synthesis, structure and metallation of spiro-N3P3(O2C12H8)(OC5H4N-2)4: a heptacoordinate Co(II) in the molecular structure of N3P3(O2C12H8)(OC5H4N-2)4 . Co(NO3)2 Polyhedron, 27 (1). pp. 255-262. ISSN 0277-5387
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Official URL: http://linkinghub.elsevier.com/retrieve/pii/S02775...
Related URL: http://dx.doi.org/10.1016/j.poly.2007.09.026
Abstract
Spiro-N3P3(O2C12H8)(OC5H4N-2)4 (L) is an efficient multi-site coordination ligand which binds with transition metal ions to afford the mononuclear complexes [LCu(NO3)2], [LCo(NO3)2] and [LZnCl2]. In [LCu(NO3)2] the copper atom is six-coordinate with the cyclophosphazene ligand coordinating to the metal ion through one skeletal ring nitrogen atom and two nitrogen atoms of geminal pyridyloxy substituents in a η3-gem-N3 mode. The two nitrate ligands provide monodentate as well as chelating coordination. In [LCo(NO3)2] the coordination geometry around Co(II) is pentagonal bipyramidal with a 3N, 4O coordination environment. The cyclophosphazene ligand binds to the metal ion in a η 3-non-gem-N3 mode. The two nitrate ligands function as chelating ligands and complete the coordination around cobalt. The coordination response of L in the complex [LZnCl2] is also η3-non-gem-N3. Two chloride ligands complete the coordination environment around zinc.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to Elsevier Science. |
| Keywords: | Cyclotriphosphazene; Hydroxypyridine; Metal Complexes; Multi-Site Coordination Ligand |
| ID Code: | 8741 |
| Deposited On: | 28 Oct 2010 05:47 |
| Last Modified: | 28 Oct 2010 05:47 |
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