Photo-induced metastable linkage isomers of ruthenium nitrosyl porphyrins

Abstract

IR spectroscopic results, combined with earlier crystallographic and spectroscopic evidence on Fe and Ru nitrosyl complexes, indicate that metastable η¹-O and η²-NO linkage isomers are formed on low-temperature irradiation of the nitrosyl metalloporphyrins (OEP)Ru(NO)L (L = O-i-C₅H₁₁, SCH₂CF₃); the new compounds are stable at low temperature, but revert to the ground state on warming.

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