Nuclear quadrupole resonance and structure of the dichloride, HCl2–, ion

Abstract

³⁵ Cl quadrupole resonance signals have been observed in eight salts of the HCl₂^– or DCl₂^– ion, all of which fall into two classes according as to whether the ³⁵Cl frequencies lie near 12 or 20 MHz: the results for CsCl,⅓(H₃O⁺HCl₂^–) show that the low frequency singnal is associated with a symmetric HCl₂^– ion, and the small shift observed on deuteriation can be explained in terms of a flat or nearly flat symmetric potential well.