“…Meso-tetra(4-carboxyphenyl)porphine, [H 6 TPPC], and meso-tetra(4-sulfo natophenyl)porphine, [H 6 TPPS], interactions with diorgano and tri-organotin(IV) moieties have been investigated and the results evidenced the formation of complexes with formula (R 2 Sn) 2 H 2 -TPPC, (R 3 Sn) 4 H 2 TPPC, (R 2 Sn) 2 H 2 TPPS and (R 3 Sn) 4 -H 2 TPPS (R = Me, n-Bu, Ph), respectively. Their solid state and solution configurations were reported, together with their in vivo cytotoxic activity [6,7].…”