Photoinduced linkage isomerism of {RuNO}6 complexes with bioligands and related chelators

Anna Zangl; Peter Klüfers; Dominik Schaniel; Theo Woike

doi:10.1039/B812246F

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Photoinduced linkage isomerism of {RuNO}⁶ complexes with bioligands and related chelators†

Anna Zangl,^a Peter Klüfers,*^a Dominik Schaniel^b and Theo Woike*^b

Author affiliations

* Corresponding authors

^a Department für Chemie und Biochemie der Ludwig-Maximilians-Universität, Butenandtstraße 5–13, 81377 München, Germany
E-mail: kluef@cup.uni-muenchen.de
Fax: +49 89 2180 77407

^b Physikalisches Institut der Universität zu Köln, Zülpicher Straße 77, 50937 Köln, Germany
E-mail: th.woike@uni-koeln.de

Abstract

Five novel complexes containing the {RuNO}⁶ fragment and the anions derived from L-histidine (L-his), rac-3-amino-alanine (rac-dap), kojic acid (koj), methyliminodiacetic acid (mida), and thiodiacetic acid (tda) have been synthesised and characterised by single-crystal X-ray diffraction analysis, mass spectrometry, spectroscopic methods (NMR, UV–vis, IR) and elemental analysis. In the irradiated complexes, [Ru(NO)Cl₂(L-his)] (1), [Ru(NO)Cl₂(rac-dap)] (2), K[Ru(NO)Cl₃(koj)] (3), K[Ru(NO)Cl₂(mida)]·½H₂O (4), and K[Ru(NO)Cl₂(tda)]·H₂O (5), the existence of the photoinduced long-lived metastable isonitrosyl state S1 and/or the side-on-bonded S2 state were detected by differential scanning calorimetry (DSC) and/or IR spectroscopy. For all complexes 1–5 full geometry optimisation, frequency analysis and calculation of the isotropic magnetic shielding tensors have been conducted in the framework of DFT theory.

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Article information

DOI: https://doi.org/10.1039/B812246F
Article type: Paper
Submitted: 17 Jul 2008
Accepted: 27 Oct 2008
First published: 07 Jan 2009

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Dalton Trans., 2009, 1034-1045

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Photoinduced linkage isomerism of {RuNO}⁶ complexes with bioligands and related chelators

A. Zangl, P. Klüfers, D. Schaniel and T. Woike, Dalton Trans., 2009, 1034 DOI: 10.1039/B812246F

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Dalton Transactions