First syntheses of cocrystallites consisting of anti-formed metal octaethylporphyrins with fullerene C60

The first examples of crystals that contain C-60 with anti-formed metal complexes of octaethylporphyrin (OEP) have been obtained. In the structures of Pd-II(OEP).C-60.1.5C(6)H(6) and Cu-II(OEP).C-60. 2C(6)H(6), four ethyl groups of the metal octaethylporphyrin portions lie on one side and the other four on the opposite side of the porphyrin plane toward the C-60. The fullerene is peculiarly positioned in its closest approach to the metal atom, involving the 5:6 ring junctions. There is the possibility of a strong interaction between the metal octaethylporphyrin and C-60. On the other hand, syn-formed metal octaethylporphyrins are observed in the cases of Ru-II(CO)(OEP).C-60. 2C(6)H(5)CH(3) and 2Zn(II)(OEP). C-60. 2C(6)H(6), suggesting that there is a face-to-face interaction between two adjacent octaethylporphyrins. The intermolecular interactions of the anti- and syn-formed metal octaethylporphyrins in the cocrystallites containing C-60 are also described.