期刊
JOURNAL OF PHYSICAL CHEMISTRY A
卷 116, 期 5, 页码 1435-1444出版社
AMER CHEMICAL SOC
DOI: 10.1021/jp2099976
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资金
- TCD
- Leverhulme Trust
- Science Foundation Ireland [09/REP/CAP2174]
- EPSRC [EP/J003921/1] Funding Source: UKRI
- Engineering and Physical Sciences Research Council [EP/J003921/1] Funding Source: researchfish
The solid state structures of three compounds that contain a perfluorinated chain, CF3(CF2)(5)CH2CH(CH3)CO2H, CF3(CF2)(5)(CH2)(4)(CF2)(5)CF3 and {CF3(CF2)(5)CH2CH2}(3)P=O have been compared and a number of C-F center dot center dot center dot F-C and C-F center dot center dot center dot H-C interactions that are closer than the sum of the van der Waals radii have been identified. These interactions have been probed by a comprehensive computational chemistry investigation and the stabilizing energy between dimeric fragments was found to be 0.26-29.64 kcal/mol, depending on the type of interaction. An Atoms-in-Molecules (AIM) study has confirmed that specific C-F center dot center dot center dot F-C interactions are indeed present, and are not due simply to crystal packing. The weakly stabilizing nature of these interactions has been utilized in the physisorption of a selected number of compounds containing long chain perfluorinated ponytails onto a perfluorinated self-assembled monolayer, which has been characterized by IRRAS (Infrared Reflection Absorption Spectroscopy).
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