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The low-temperature crystal structures of 1,7-octadiene (C8H14), 1,9-decadiene (C10H18), 1,7-octadiyne (C8H10) and 1,9-decadiyne (C10H14), determined following in situ crystal growth from the liquid, reveal the role of C-H...pi interactions in alpha,omega-unsaturated linear hydrocarbons in the solid state.
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Andrew D. Bond (2002) studied this question.
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