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Issue 5, 2004
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{(μ-L)[RuII(acac)2]2}n, n = 2+, +, 0, −, 2−, with L = 3,3′,4,4′-tetraimino-3,3′,4,4′-tetrahydrobiphenyl. EPR-supported assignment of NIR absorptions for the paramagnetic intermediates

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Abstract

A complete EPR and UV-Vis-NIR spectroelectrochemical characterisation has been carried out for the series 12+/+/0/−/2− where 1 is the new complex {(μ-L)[RuII(acac)2]2}, L = 3,3′,4,4′-tetraimino-3,3′,4,4′-tetrahydrobiphenyl. The paramagnetic intermediates are identified as the anion radical (L˙) complex 1˙ with a long-wavelength intra-ligand transition at 2160 nm and as the weakly coupled diruthenium(II,III) species 1+ (Kc = 103) with a low-intensity intervalence charge transfer (IVCT) band at 1570 nm. DFT calculations using ADF and Gaussian 03 programs support these assignments.

Graphical abstract: {(μ-L)[RuII(acac)2]2}n, n = 2+, +, 0, −, 2−, with L = 3,3′,4,4′-tetraimino-3,3′,4,4′-tetrahydrobiphenyl. EPR-supported assignment of NIR absorptions for the paramagnetic intermediates

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Publication details

The article was received on 05 Dec 2003, accepted on 15 Jan 2004 and first published on 03 Feb 2004


Article type: Paper
DOI: 10.1039/B315927M
Citation: Dalton Trans., 2004,0, 750-753
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    {(μ-L)[RuII(acac)2]2}n, n = 2+, +, 0, −, 2−, with L = 3,3′,4,4′-tetraimino-3,3′,4,4′-tetrahydrobiphenyl. EPR-supported assignment of NIR absorptions for the paramagnetic intermediates

    S. Patra, B. Sarkar, S. Ghumaan, J. Fiedler, S. Záliš, W. Kaim and G. Kumar Lahiri, Dalton Trans., 2004, 0, 750
    DOI: 10.1039/B315927M

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