SCHEDULED MAINTENANCE
The self-associated structures of two noble meso-(monopyrazolyltritolyl)porphyrins synthesized via their NH-protected precursors have been studied by 1H NMR, FT-IR and ESI MS measurements; meso-(pyrazol-4-yl)porphyrin and meso-(3,5-dimethylpyrazol-4-yl)porphyrin form a dimer and a tetramer, respectively, in solution due to intermolecular hydrogen bonding between pyrazole units.
C. Ikeda, N. Nagahara, E. Motegi, N. Yoshioka and H. Inoue, Chem. Commun., 1999, 1759 DOI: 10.1039/A904513I
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