Abstract

The magnetic vibrational circular dichroism (MVCD) spectra of HCI and DCI are presented. The average rotational g-value of H35Cl in the first excited vibrational states was determined to be 0.45 l and 0.449 for the P and R branches, respectively, using moment analysis of the MVCD bandshapes. In addition, the gJ-values of H37Cl, D35Cl, and D37Cl were measured for the first time. Within our experimental error, the gJ-values obtained were consistent with the accepted gJ-values for the ground state of H35Cl and with theoretically calculated gJ-values for the other isotopomers. The results show that MVCD can provide an alternative method to microwave spectroscopy or molecular beam magnetic resonance spectroscopy for determining rotational g-values.

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