Metal Atoms Collinear with the Spiro Carbon of ...
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| Title | Metal Atoms Collinear with the Spiro Carbon of 6,6-Open Adducts, M2@C80(Ad) (M = La and Ce, Ad = Adamantylidene) |
| Author(s) | M. Yamada, C. Someya, T. Wakahara, T. Tsuchiya, Y. Maeda, T. Akasaka, K. Yoza, E. Horn, M. Liu, N. Mizorogi, S. Nagase |
| Journal | Journal of the American Chemical Society |
| Date | 2008 |
| Volume | 130 |
| Issue | 4 |
| Start page | 1171 |
| End page | 1176 |
| Abstract | Abstract: The photochemical reaction of M2@C80 (M = La and Ce) with 2-adamantane-2,3'-[3H]-diazirine (1) affords the corresponding adducts by carbene addition. The adducts were characterized by spectroscopic and single-crystal X-ray structure analyses. Crystallographic data for the adduct La2@C80(Ad) (2, Ad = adamantylidene) reveal that the two La atoms are collinear with the spiro carbon of the 6,6-open adduct. It is noteworthy that the La-La distance is highly elongated by the addition of carbene. Paramagnetic 13C NMR spectral analysis of the adduct Ce2@C80(Ad) (3) indicates that the two Ce atoms are also collinear with the spiro carbon at room temperature in solution. The unique metal positions were confirmed by density functional calculations. |
| DOI | 10.1021/ja073924w |
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