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MICROWAVE SPECTRA AND GEOMETRIES OF H$_{2}$C$_{2}$$\cdots$AgCl AND H$_{2}$C$_{2}$$\cdots$CuCl

Please use this identifier to cite or link to this item: http://hdl.handle.net/1811/52606

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Title: MICROWAVE SPECTRA AND GEOMETRIES OF H$_{2}$C$_{2}$$\cdots$AgCl AND H$_{2}$C$_{2}$$\cdots$CuCl
Creators: Walker, N. R.; Stephens, S. L.; Mizukami, W.; Tew, D. P.; Legon, A. C.
Issue Date: 2012
Abstract: Pure rotational spectra of the vibrational ground states of H$_{2}$C$_{2}$$\cdots$AgCl and H$_{2}$C$_{2}$$\cdots$CuCl have been measured by chirped-pulse FTMW spectroscopy. Each complex is generated via laser ablation of the metal in the presence of small percentages of CCl$_{4}$ and C$_{2}$H$_{2}$ in argon. The complexes are stabilized and interrogated in the cold environment of a supersonic jet. Rotational constants ({\it{B}}$_{0}$, {\it{C}}$_{0}$) and the centrifugal distortion constant, $\Delta$$_{\it{J}}$, have been measured for six isotopologues of H$_{2}$C$_{2}$$\cdots$AgCl and three isotopologues of H$_{2}$C$_{2}$$\cdots$CuCl with substitutions at the metal, chlorine and carbon atoms in each case. The spectrum of each complex is consistent with a {\it{C}}$_{2v}$ structure in which the metal atom is coordinated by the ${\pi}$-orbital of ethyne. The measured rotational constants allow determination of the length of the bond between the metal and chlorine atoms, {\it{r}}(M{\textemdash}Cl), and the distance between the metal atom and the centre of the ethyne double bond, {\it{r}}(M{\textemdash}*). Nuclear quadrupole coupling constants have been measured for the chlorine atom in each complex and also for copper in H$_{2}$C$_{2}$$\cdots$CuCl.
URI: http://hdl.handle.net/1811/52606
Other Identifiers: 2012-MH-09
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