Vibrational Study of the Dynamics of n-Decylammonium Chains in the Perovskite-Type Layer Compound (C10H21NH3)2CdCl4

Article abstract of DOI:10.1021/j150667a031

The perovskite-type compound (C10H21NH3)2CdCl4(C10Cd) exhibits two phase transitions, at 35 and 39 deg C, connected with reorientations of the whole deacylammonium chains and melting of the hydrocarbon parts.A temperature-dependence study of the infrared and Raman spectra of C10Cd and three selectively deuterated derivatives, C10Cd-1,1-d2, C10Cd-2,2-d2, and C10Cd-4,4-d2, provides evidence for coupling between the two types of chain dynamics and allows for a more precise description of the conformational disorder of deacylammonium cations in the high-temperature phases.