12
 Li-Hua Gan, Journal of Chemical Education, 85(3), 444, 2008.
C                     -0.551834   -1.192592    0.311535
C                     -0.215879   -0.851907   -1.025427
C                     -0.375975    0.551176   -1.174180
C                     -0.810874    1.077644    0.070848
C                     -0.919561   -0.000064    0.989070
C                     -1.285345   -0.185925   -0.370361
C                      0.810873   -1.077645   -0.070849
C                      0.919561    0.000063   -0.989071
C                      0.375975   -0.551176    1.174181
C                      0.215880    0.851907    1.025429
C                      0.551833    1.192594   -0.311535
C                      1.285347    0.185924    0.370361