Neutron diffraction shows a photoinduced isonitrosyl linkage isomer in the metastable stateSIofNa2[Fe(CN)5NO]∙2D2O

Abstract

We report neutron diffraction experiments on the light-induced metastable state $S$I in single crystals of ${\mathrm{Na}}_{2}[\mathrm{Fe}{(\mathrm{CN})}_{5}\mathrm{NO}]∙2{\mathrm{D}}_{2}\mathrm{O}$. It is shown that the metastable state $S$I corresponds to a linkage isomer of the NO group, the so-called isonitrosyl configuration where the NO ligand is oxygen bound to the central iron atom.