STUDY OF METASTABLE EXCITED STATE MS1 OF Na2[Ru(NO2)4)(NO)(OH)] BY SYNCHROTRON BY X-RAY DIFFRACTION. PRELIMINARY RESULTS.
Anna M.Puig-Molina, Harald Muller, Heinz Graafsma and Ake Kvick
European Synchrotron Radiation Facility, Avenue des Martyrs, B.P. 220, F-38043, Grenoble Cedex, France. puig@esrf.fr
Keywords: Na2[Ru(NO2)4(NO)(OH)], metastable excited state, crystal structure
Two long-living metastable electronic excited states can be induced in [Ru(NO2)4(NO)(OH)]2- by light irradiation in the blue region [1]. Both excited states are metastable below 200K and coexist with the ground state.
The Na2[Ru(NO2)4(NO)(OH)] ground state and the metastable excited state MS1 have been studied by synchrotron X-ray diffraction at 110K at the Materials Science beamline at the ESRF. Na2[Ru(NO2)4(NO)(OH)] undergoes a phase transition between room temperature and 110K. The Na2[Ru(NO2)4(NO)(OH)] ground state structure at 110K and preliminar results on the MS1 geometry will be presented.