Structural investigations of ruthenium phthalocyanines with EXAFS spectroscopy

To obtain a more detailed insight into the structure of PcRu (1), an EXAFS investigation has been carried out on amorphous PcRu and compared with the bisubstituted PcRu(n-BuNH2)(2) (2). From the obtained atomic distances around the metal center, it was possible to deduce detailed structural models for both compounds. For 1, the dimeric structure was confirmed; for 2, the EXAFS measurements led to an unusual structure in which both n-butylamine:groups are located on one side of the PcRu ring.