title: Vibrational spectroscopic study of the uranyl selenite mineral derriksite Cu4UO2(SeO3)2(OH)6·H2O.
abstract: Raman spectrum of the mineral derriksite Cu4UO2(SeO3)2(OH)6⋅H2O was studied and complemented by the infrared spectrum of this mineral. Both spectra were interpreted and partly compared with the spectra of demesmaekerite, marthozite, larisaite, haynesite and piretite. Observed Raman and infrared bands were attributed to the (UO2)(2+), (SeO3)(2-), (OH)(-) and H2O vibrations. The presence of symmetrically distinct hydrogen bonded molecule of water of crystallization and hydrogen bonded symmetrically distinct hydroxyl ions was inferred from the spectra in the derriksite unit cell. Approximate U-O bond lengths in uranyl and O-H···O hydrogen bond lengths were calculated from the Raman and infrared spectra of derriksite.
authors.affiliation: School of Chemistry, Physics and Mechanical Engineering, Science and Engineering Faculty, Queensland University of Technology, GPO Box 2434, Brisbane Queensland 4001, Australia. Electronic address: r.frost@qut.edu.au.
authors.forename: Ray L
authors.initials: RL
authors.lastname: Frost
authors.forename: Jiří
authors.initials: J
authors.lastname: Čejka
authors.forename: Ricardo
authors.initials: R
authors.lastname: Scholz
authors.forename: Andrés
authors.initials: A
authors.lastname: López
authors.forename: Frederick L
authors.initials: FL
authors.lastname: Theiss
authors.forename: Yunfei
authors.initials: Y
authors.lastname: Xi
mesh_terms: D003300:Copper / Q000737:chemistry*; D006860:Hydrogen Bonding; D006878:Hydroxides; D008903:Minerals / Q000737:chemistry*; D018038:Sodium Selenite / Q000737:chemistry*; D013055:Spectrophotometry, Infrared; D013059:Spectrum Analysis, Raman; D017974:Uranium Compounds / Q000737:chemistry*; D014732:Vibration
chemical_list: D006878:Hydroxides; D008903:Minerals; D017974:Uranium Compounds; C538932:haynesite; D003300:Copper; C031356:hydroxide ion; D018038:Sodium Selenite
keywords: Derriksite; Infrared spectroscopy; Raman spectroscopy; Selenite; Uranyl; U–O bond lengths