Synthesis and spectroscopic characterization of Ru(II) and Sn(IV)-porphyrins supramolecular complexes

• Ru(II) and Sn(IV)-porphyrins were synthesized.
• 2D DOSY NMR spectra for title compounds were studied.
• The association constants were calculated.

Synthesis and NMR studies of Ru(II) and Sn(IV) tetraphenylporphyrins supramolecular complexes were carried out. The diffusion coefficients of the complexes, porphyrinates, and solvents were determined by DOSY NMR spectroscopy. By the method of spectrophotometric titration a binding ability of Ru(II) tetraphenylporphyrin towards 4-(imidazol-1-yl)-phenol was investigated, stability constant of resulting complexes and concentration intervals of their existence were defined.