Issue 14, 2000
From the journal:

Journal of the Chemical Society, Dalton Transactions

X-Ray diffraction and spectroscopic studies of the light-induced metastable state of a ethylenediamine nitrosyl ruthenium complex

Masaki Kawano,ab   Ayako Ishikawa,c   Yoshiyuki Morioka,c   Hiroshi Tomizawa,d   Ei-ichi Mikid  and  Yuji Ohashi*ab  

* Corresponding authors

a CREST, Japan Science and Technology Corporation, Kawaguchi City, Japan

b Department of Chemistry and Materials Science, Tokyo Institute of Technology, Tokyo, Japan, E-mail: yohashi@chem.titech.ac.jp

c Department of Chemistry, Faculty of Science, Saitama University, Urawa, Japan

d Department of Chemistry, College of Science, Rikkyo University, Tokyo, Japan

Abstract

Blue-laser irradiation of a single crystal of the chloride salt of a cationic complex, trans-[Ru(en)2(H2O)(NO)]3+ (en = ethylenediamine), yielded MS1 (a metastable state of end-on type) which is remarkably stable (decay temperature Td = 267 K) compared with MS1 of sodium nitroprusside Na2[Fe(CN)5(NO)] (SNP). No MS2 state (side-on type) was observed by X-ray diffraction and IR spectroscopy. Even with a low population of 8% of the metastable species, the structure was clearly determined by X-ray analysis. For the first time, we observed an elongation of the N–O bond by X-ray diffraction, corresponding to a frequency downshift of the ν(NO) stretching vibration. The remarkably long lifetime of the metastable state of trans-[Ru(en)2(H2O)(NO)]3+ compared with that of SNP is explained by a stereochemical analysis using reaction cavity diagrams.

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Article information

DOI
https://doi.org/10.1039/B001132K
Article type
Paper
Submitted
10 Feb 2000
Accepted
22 May 2000
First published
26 Jun 2000

J. Chem. Soc., Dalton Trans., 2000, 2425-2431

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X-Ray diffraction and spectroscopic studies of the light-induced metastable state of a ethylenediamine nitrosyl ruthenium complex

M. Kawano, A. Ishikawa, Y. Morioka, H. Tomizawa, E. Miki and Y. Ohashi, J. Chem. Soc., Dalton Trans., 2000, 2425 DOI: 10.1039/B001132K

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