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- Results of MM2 calculations for 8:13 ΔHf = -6.8 kcal-mol−1; ΔEstrain = 85.5 kcal-mol−1
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- The authors have deposited atomic coordinates for 6 with the Cambridge Crystal-lographic Data Centre. The coordinates can be obtained, on request, from the Director, Cambridge Crystallographic Data Centre, 12 Union Road, Cambridge CB2 1EZ, UK
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- The atom numberings presented herein correspond to the numbering system as specified in the atomic coordinate data tables for 6 14
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