Chlorine nuclear quadrupole coupling in platinum and palladium dichlorides

Abstract

Nuclear quadrupole resonance studies confirm the existence of α-PdCl₂, β-PdCl₂, and β-PtCl₂, and show that whilst the β-PtCl₂ structure is distorted the β-PdCl₂ structure is regular. The magnitudes of the coupling constants show that the α- and β-structures have nearly identical electron distributions, all differences being due, presumably, to changes in the metal–chlorine–metal bond angle.