Chatterjee, Debabrata ; Bajaj, H. C. ; Das, Amitava (1993) Synthesis, kinetics, and physicochemical studies of a new mixed-valent heterobinuclear cyano-bridged ruthenium(III)-iron(II) complex Inorganic Chemistry, 32 (19). pp. 4049-4052. ISSN 0020-1669
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Official URL: http://pubs.acs.org/doi/abs/10.1021/ic00071a013
Related URL: http://dx.doi.org/10.1021/ic00071a013
Abstract
The synthesis and physicochemical properties (UV-vis, IR, EPR, cyclic voltammetry) of the complex K5[RuIII-(edta)(NC)FeII(CN)5] (2) are described. Complex 2 shows an intervalence absorption maximum (Eop) at 940 nm in H2O (at room temperature), and the position of the absorption maximum shifts with change in temperature (20-60°C). The kinetics of the formation of complex 2 was studied spectrometrically by stopped-flow technique. The rate of formation of complex 2 was found to be first-order with respect to both ru(edta)(H20)- and Fe(CN)4-6 concentrations and highly dependent on the ionic strength of the reaction medium. Rate and activation parameters (ΔH* and ΔS*) calculated for tis reaction are in consistent with the proposed associative mechanism. intervalence thermochromism for this ground-state mixed-valence complex 2 is discussed with reference to the data reported for the similar [RuIII(NH3)5(NC)FeII(CN)5]- complex.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to American Chemical Society. |
| ID Code: | 59947 |
| Deposited On: | 08 Sep 2011 10:17 |
| Last Modified: | 08 Sep 2011 10:17 |
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