The nucleophilic attack of a rhodium(I) porphyrin on a chlorotin(IV) corrole yields the heterobinuclear rhodium porphyrin-tin corrole complex where the two metals are bound via a single metal-metal bond. The X-ray structure of the rhodium tetraphenylporphyrin-tin(2,3,7,13,17,18-hexamethyl-8,12-diethylcorrole) complex is reported. The Rh-Sn single bond distance is equal to 2.5069(7) Å and the Rh and Sn atoms are located at 0.076 and 0.793 Å from the porphyrin and the corrole 4N mean planes, respectively.