dc.creator Dijk, Cody W. Van en_US dc.creator Sun, Ming en_US dc.creator Wijngaarden, Jennifer Van en_US dc.date.accessioned 2012-07-09T19:30:13Z dc.date.available 2012-07-09T19:30:13Z dc.date.issued 2012 en_US dc.identifier 2012-TH-08 en_US dc.identifier.uri http://hdl.handle.net/1811/52434 dc.description Author Institution: Department of Chemistry, University of Manitoba, Winnipeg MB R3T 2N2 Canada en_US dc.description.abstract The ground state rotational spectra of a series of fluorinated pyridines have been measured using a Balle-Flygare Fourier transform microwave (FTMW) spectrometer and a chirped pulse Fourier transform microwave (cp-FTMW) instrument between 8 and 23 GHz. The species under investigation include 2- and 3-fluoropyridine as well as 2,3-, 2,4-, 2,5-, 2,6- and 3,5-difluoropyridine. In addition to the parent species, the spectra of the $^{13}$C and $^{15}$N singly-substituted isotopologues were recorded in natural abundance and used to calculate relevant geometric parameters of the pyridine ring backbone. Analysis of the $^{14}$N hyperfine structure provided an additional source of information about the electronic structure surrounding the nitrogen atom as a function of fluorine substitution. The experimental results are compared with those from \emph{ab initio} theory and are consistent with a bonding model that involves donation of electron density from fluorine into the $\pi$-system of pyridine. en_US dc.language.iso en en_US dc.publisher Ohio State University en_US dc.title ROTATIONAL SPECTRA AND STRUCTURES OF THE MONO- AND DI-FLUORINATED PYRIDINES en_US dc.type Article en_US dc.type Image en_US dc.type Presentation en_US
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