Abstract
1,4-Diethynyltetrafluorobenzene was prepared and separately co-crystalized with 4,4′-bipyridine, 1,2-bis(4′-pyridyl)ethyne and trans-1,2-bis(4′-pyridyl)ethane to form 1:1 co-crystals that each contain essentially linear C–H···N hydrogen bonded ribbons of alternating diyne and dipyridine. The C–H···N hydrogen bond distances and angles in the 1:1 co-crystals are analyzed and compared to the previously reported C–H···N hydrogen bond distances and angles in the corresponding co-crystals formed with 1,4-diethynylbenzene.
Graphical Abstract
1,4-Diethynyltetrafluorobenzene was prepared and separately co-crystalized with 4,4′-bipyridine, 1,2-bis(4′-pyridyl)ethyne and trans-1,2-bis(4′-pyridyl)ethane to form 1:1 co-crystals that each contain essentially linear C–H···N hydrogen bonded ribbons of alternating diyne and dipyridine. The C–H···N hydrogen bond distances and angles in the 1:1 co-crystals are analyzed and compared to the previously reported C–H···N hydrogen bond distances and angles in the corresponding co-crystals formed with 1,4-diethynylbenzene.
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Acknowledgment
The Missouri State University Provost Incentive Fund funded the purchase of the X-ray diffractometer.
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Bosch, E. Comparison of sp-C–H···N Hydrogen Bond Lengths in Fluorinated and Nonfluorinated Ethynylbenzenes. J Chem Crystallogr 44, 287–292 (2014). https://doi.org/10.1007/s10870-014-0510-x
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DOI: https://doi.org/10.1007/s10870-014-0510-x