The conditions for the photogeneration of NO linkage isomers at room temperature are studied. By pulsed laser irradiation in the blue spectral range the long-lived Ru-ON isomer can be generated at room temperature, which is crucial for potential applications such as holography and data storage. Using static and time-resolved spectroscopy (UV/Vis and IR) we give evidence that the liftime of the Ru-(η 2 -(NO)) isomer is a decisive parameter for the formation of Ru-ON isomer at high temperature due to a two-step isomerization mechanism Ru-NO → Ru-(η 2 -(NO)) → Ru-ON. Furthermore, we report the low temperature structures for each isomer, which were revealed by photocrystallography.

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The [RuNO(Py)4F](ClO4)2 complex with the highest thermal stability of the Ru–ON linkage isomer.

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In the present study four new complexes of the trans-[RuNO(NH3)4F]2+ cation with noble-metal anions [PtCl6]2-, [PdCl4]2- and [PtCl4]2-, and perchlorate anion ClO4- were synthesized and characterized by spectroscopic (IR, UV/vis),...

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