title: Comparative study of vibrational spectra of Rb4LiH3(SO4)4, K4LiH3(SO4)4, K4LiH3(SeO4)4, Na5H3(SeO4)4.2H2O and Na2SeO4.H2SeO3.H2O crystals. Polarized infrared and Raman studies.
abstract: Vibrational spectra of M4LiH3(XO4)4 family, where M=K, Rb, X=S, Se together with Na5H3(SeO4)4.2H2O and Na2SeO4.H2SeO3.H2O crystals were compared. Similarities and differences are described. The spectroscopic manifestation of the presence of hydrogen bonds is discussed. Position of the bands corresponding to bending type of vibrations (in-plane and out-of plane) of hydrogen bonds is analyzed in the function of temperature. Small dynamic splitting of the bands due to weak interactions between ions is noticed.
authors.affiliation: Institute of Low Temperature and Structure Research, Polish Academy of Sciences, P.O. Box 937, 50-950 Wrocław 2, Poland. mkm@int.pan.wroc.pl
authors.forename: M K
authors.initials: MK
authors.lastname: Marchewka
authors.forename: J
authors.initials: J
authors.lastname: Baran
mesh_terms: D003460:Crystallization; D006860:Hydrogen Bonding; D008027:Light; D008956:Models, Chemical; D011188:Potassium / Q000737:chemistry*; D012413:Rubidium / Q000737:chemistry*; D012964:Sodium / Q000737:chemistry*; D013053:Spectrophotometry; D013055:Spectrophotometry, Infrared; D017550:Spectroscopy, Fourier Transform Infrared; D013059:Spectrum Analysis, Raman / Q000379:methods*; D013696:Temperature; D014867:Water / Q000737:chemistry
chemical_list: D014867:Water; D012964:Sodium; D012413:Rubidium; D011188:Potassium