著者

Hirofumi Nobukuni Takuya Kamimura Hidemitsu Uno Yuichi Shimazaki Yoshinori Naruta Fumito Tani

出版者

(社)日本化学会

雑誌

Bulletin of the Chemical Society of Japan (ISSN:00092673)

巻号頁・発行日

pp.1111210384-1111210384, (Released:2011-11-29)

参考文献数

32

被引用文献数

13

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Cyclic nickel and free-base porphyrin dimers (Ni2-CPDPy and H4-CPDPy) include fullerene C70 both in solution and in the crystals. Based on the 13C NMR spectra in solution, the included C70 molecule inside the cavity of Ni2-CPDPy shows both end-on and side-on orientations, whereas the C70 molecule within H4-CPDPy has only a side-on orientation toward the porphyrin rings. X-ray crystallography revealed both “end-on” and “side-on” orientations of C70 in the crystal structure of the inclusion complex of Ni2-CPDPy and C70. This is the first example of an X-ray crystallographic determination for an end-on orientation of C70 cocrystallized with porphyrins. On the other hand, only a side-on orientation of C70 was observed in the crystal structure of the complex of H4-CPDPy and C70. Further, a zigzag array of C70 molecules through van der Waals contacts with each other is formed along the monoclinic b axis in the latter crystal.