title: Inapplicability of small-polaron model for the explanation of infrared absorption spectrum in acetanilide.
abstract: The applicability of small-polaron model for the interpretation of infrared absorption spectrum in acetanilide has been critically reexamined. It is shown that the energy difference between the normal and anomalous peak, calculated by means of small-polaron theory, displays pronounced temperature dependence which is in drastic contradiction with experiment. It is demonstrated that self-trapped states, which are recently suggested to explain theoretically the experimental absorption spectrum in protein, cannot cause the appearance of the peaks in absorption spectrum for acetanilide.
authors.affiliation: The Vinca Institute of Nuclear Sciences, Laboratory for Theoretical and Condensed Matter Physics, 11001 Belgrade, Serbia. zivic@vinca.rs
authors.forename: Slobodan
authors.initials: S
authors.lastname: Zeković
authors.forename: Zoran
authors.initials: Z
authors.lastname: Ivić
mesh_terms: D000042:Absorption; D000083:Acetanilides / Q000737:chemistry*; D008956:Models, Chemical; D015203:Reproducibility of Results; D013055:Spectrophotometry, Infrared; D013696:Temperature
chemical_list: D000083:Acetanilides; C508827:acetanilide