The complex fine structure in the Raman spectrum of the quasi-one-dimensional solid [Pt(${\mathrm{C}}_2$${\mathrm{H}}_8$${\mathrm{N}}_2$${)}_2$][Pt(${\mathrm{C}}_2$${\mathrm{H}}_8$${\mathrm{N}}_2$${)}_2$${\mathrm{Cl}}_2$](${\mathrm{ClO}}_4$${)}_4$ is shown, through studies of isotopically enriched materials and lattice-dynamics calculations, to originate from vibrational modes strongly localized by the positional disorder of the two naturally occurring Cl isotopes, making this an elegant example of a real material displaying vibrational localization in one dimension. The modes responsible for the observed features reside on short chain segments defined by a few statistically favored sequences of isotopes.

Close

PrevNext

View figure in article