Abstract
Microwave spectra of ground state 20Ne: 1H 79Br, 20Ne: 1H 81Br, 22Ne: 1H 79Br, 22Ne: 1H 81Br, and their corresponding deuterated isotopomers are obtained using pulsed-nozzle Fourier Transform microwave spectroscopy. The 20Ne: 1H 79Br ground state 〈 P 2 ( cos θ ′ ) 〉 = 0.09025 ( 11 ) is characteristic of a nearly free rotor. The available 20Ne: 1H 79Br, 20Ne: 2H 79Br, 22Ne: 1H 79Br and 22Ne: 2H 79Br data are analyzed and used to determine an initial ground vibrational state morphed potential for the dimer. This resulting intermolecular potential indicates a global minimum Ne:BrH linear isomeric structure with R cm = 3.42 Å. These analyses also provide structural perspectives on the prototypical homologous series Rg:HX (Rg = Ne, Ar, Kr; X = F, Cl, Br, I).
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