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Ordered structure of a distorted C[sub 60][sup 2[minus]] fulleride ion
We now report the experimental observation of a distortion in the crystal structure of the PPN[sup +] salt of C[sub 60][sup 2[minus]] (PPN[sup +] = bis(triphenylphosphine)iminium ion). This is the first single-crystal structure of a C[sub 60][sup [minus]] salt, and it is highly ordered. The packing...
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Published in: | Journal of the American Chemical Society 1994-05, Vol.116:9 |
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Main Authors: | , , , , |
Format: | Article |
Language: | English |
Subjects: | |
Online Access: | Get full text |
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Summary: | We now report the experimental observation of a distortion in the crystal structure of the PPN[sup +] salt of C[sub 60][sup 2[minus]] (PPN[sup +] = bis(triphenylphosphine)iminium ion). This is the first single-crystal structure of a C[sub 60][sup [minus]] salt, and it is highly ordered. The packing diagram shows that the C[sub 60][sup 2[minus]] anion sits at a center of symmetry and is completely surrounded by PPN[sup +] cations. There are at least 22 phenyl groups (11 symmetry-related pairs) that closely approach the C[sub 60][sup 2[minus]] unit. They are derived from five distinct pairs of cations on a 4,3,2,1,1 basis. The C[sub 60][sup 2[minus]] ion shows a small but significant distortion from icosahedral symmetry. In summary, we have provided the first structural proof of distortion in C[sub 60][sup n[minus]] ions. All C[sub 60][sup n[minus]] ions up to n = 5 have Jahn-Teller degenerate electronic states and may show related distortions. 12 refs., 3 figs., 1 tab. |
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ISSN: | 0002-7863 1520-5126 |
DOI: | 10.1021/ja00088a087 |