Towards Self-Doping Multimetal Porphyrin Systems
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Heating Cu(II)tetraphenylporphyrin (TPPCu) with chromocene at 120 °C affords the crystalline self-doped multimetal porphyrin system TPPCu/TPPCr in good yield. The X-ray structural analysis reveals a random configuration of TPPCu and TPPCr with a Cu:Cr ratio of about 71:29 %. Exploratory DFT calculations indicate significant electron transfer in a hypothetical cationic TPPCu/TPPRu system, in contrast to TPPCu/TPPCr.