# THE STRUCTURE OF Ne-HCN COMPARED WITH THOSE OF Ar-HCN AND Kr-HCN

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 Title: THE STRUCTURE OF Ne-HCN COMPARED WITH THOSE OF Ar-HCN AND Kr-HCN Creators: Gutowsky, H. S.; Keen, J. D.; Germann, T. C.; Emilsson, T. Issue Date: 1992 Publisher: Ohio State University Abstract: The $J=0 \rightarrow 1, 1 \rightarrow 2$, and $2\rightarrow 3 K = 0$ rotational transitions have been observed for several isotopic species of the Ne-HCN dimer. Rotational constants obtained by fitting the line centers are listed below. [FIGURE] $\chi_{aa}(^{21}Ne$), the hyperfine interaction constant for $^{21}Ne$, was found to be -0.246 MHz in the $J=0 \rightarrow 1$ transition of $^{21}Ne-HC^{15}N$. The value of $\chi_{aa}(^{14}N)$ in $^{20}Nc-HC^{14}N$ is highly dependent on J being $-0.982, -1.034$, and $-1.109$ MHz for $J= 1,2,3$ respectively. A number of $K\ne O$ transitions have also been observed including what appears to be inversion doubling of the $1_{11} \rightarrow 2_{12}$ transition. The Stark effect has been observed for several transitions and differs from that predicted for a linear species. Our results indicate that Ne-HCN is even more highly nonrigid than $Ar-HCN,^{1}$ with even stronger angular-radial coupling in the interaction $potential.^{2,3}$ Kr-HCN, on the other hand, is more normal” than $either.^{4}$. Description: $^{1}$K.R. Leopold, G.T. Fraser, F.J. Lin, D.D Nelson, JR., and W. Klemperer, J. Chem. Phys. 81 , 4922 (1984). $^{2}$T.D. Klots, C.E. Dykstra, and H.S. Gutowsky, J. Chem. Phys, 90 , 30 (1989). $^{3}$D.C. Clary, C.E. Dateo, and T. Stoecklin, J. Chem. Phys 93 , 7666(1990). $^{4}$T.C. Germann, T. Emisson, and H.S. Gutowsky, J. Chem. Phys. 95 6302 (1991). Author Institution: Noyes Chemical Laboratory, University of Illinois URI: http://hdl.handle.net/1811/12905 Other Identifiers: 1992-TH-04