Syamala, Ariyanchira ; Nethaji, Munirathinam ; Chakravarty, Akhil R. (1995) An asymmetric homodinuclear complex containing the μ-oxo-bis(μ-carboxylato)diruthenium(III) core: X-ray structure of [Ru2O(O2CC6H4-p-OMe)3(en)(PPh3)2](ClO4)·3CHCl3 Inorganica Chimica Acta, 229 (1-2). pp. 33-38. ISSN 0020-1693
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Official URL: http://linkinghub.elsevier.com/retrieve/pii/002016...
Related URL: http://dx.doi.org/10.1016/0020-1693(94)04223-I
Abstract
Asymmetric tri-bridged diruthenium(III) complexes, [Ru2O(O2CR)3(en)(PPh3)2](ClO4) (R = C6H4-p-X: X = OMe (1a), Me (1b); en = 1,2-diaminoethane), were prepared and structurally characterized. Complex 1a·3CHCl3 crystallizes in the triclinic space group. The complex has an {Ru2(μ-O)(μ-O2CR)22+} core and exhibits [O4PRu(μ-O)RuPO2N2]+ coordination environments for the metal centers. The novel structural feature is the asymmetric arrangement of ligands at the terminal sites of the core which shows an RuRu separation of 3.226(3) Å and an Ru---O---Ru angle of 119.2(5)°. An intense visible band observed near 570 nm is assigned to a charge transfer transition involving the d∏-Ru(III) and p∏-μ-O orbitals. Cyclic voltammetry of the complexes displays a reversible Ru2(III,III) Ru2(III,IV) couple near 0.8 V (versus SCE) in MeCN-0.1 M TBAP.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to Elsevier Science. |
| Keywords: | Crystal structures; Ruthenium complexes; Oxo complexes; Carboxylato complexes; Dinuclear complexes |
| ID Code: | 6340 |
| Deposited On: | 20 Oct 2010 11:07 |
| Last Modified: | 27 May 2011 05:18 |
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