4
38
Nichols, Sobinsky, Hunter, and Zeller
Examination of the ten lowest energy con-
Grant CAP-491, and by Youngstown State Uni-
versity.
formations (having energies within 2.74 kcal/mol
of the global minimum) also yields three distinct
structural motifs: three conformations have nearly
References
◦
planar dimer rings (0–1 deviations); four confor-
◦
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2
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◦
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3
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2
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◦
(
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6
four α-CH hydrogen atoms lie on the same side of
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1
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. Wang, Y.; Yang, Y.; Gu, M. Gaofenzi Cailiao Kexue Yu
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2
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2
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1
(
2
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1
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1
1
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2
2
the piperidine groups are equal on each side of
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1
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2
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Acknowledgements
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3. Bruker Advanced X-ray Solutions SHELXTL (Version 6.14),
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The authors wish to acknowledge John Car-
roll University for financial support of this re-
search. The X-ray diffractometer was funded by
NSF Grant 0087210, Ohio Board of Regents
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