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Molecular Crystals and Liquid Crystals Volume 428, 2005 - Issue 1
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Original Articles

Linear-Type S-Bridged Trinuclear Complexes with RuIII Ion and Octahedral fac(S)-[M(aet)3] Units (M = RhIII, IrIII; aet = 2-Aminoethethiolate)

Nagina Amir Department of Chemistry, University of Tsukuba, Tsukuba, JapanCorrespondence[email protected]
,
Yoshitaro Miyashita Department of Chemistry, University of Tsukuba, Tsukuba, Japan
,
Mitsuharu Fujita Department of Chemistry, University of Tsukuba, Tsukuba, Japan
,
Kiyoshi Fujisawa Department of Chemistry, University of Tsukuba, Tsukuba, Japan
&
Ken-ichi Okamoto Department of Chemistry, University of Tsukuba, Tsukuba, Japan
Pages 101-110 | Published online: 31 Aug 2006
 
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ABSTRACT

The reactions of fac(S)-[M(aet)3] (M = RhIII, IrIII; aet = 2-aminoethanethiolate) with RuCl3 · 3H2 O in water gave trinuclear complexes, ΔΛ-, ΔΔ/ΛΛ-[Ru{Rh(aet)3}2]3+ ( 1a, 1b ) and ΔΛ-, ΔΔ/ΛΛ-[Ru{Ir(aet)3}2]3+ ( 2a, 2b ). The crystal structure of 2a (NO3)3 · 3H2 O revealed that the central RuIII ion is coordinated by six S atoms from two fac(S)-[Ir(aet)3] units in an octahedral geometry, forming a linear-type S-bridged trinuclear structure. It was found that the UV-Visible (UV-Vis) spectral patterns of all complexes depend upon the terminal fac(S)-[M(aet)3] units. In the electro- and spectroelectrochemistry of these complexes, the Ir trinuclear complex showed a reversible [Ru{Ir(aet)3}2]3+/4+ redox process.

ACKNOWLEDGMENT

This work was supported by Grants-in-Aid for Scientific Research and 21st Century Center of Excellence (COE) program from Japan Society for the Promotion of Science.

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