title: IR and raman spectra of two layered aluminium phosphates Co(en)3Al3P4O16.3H2O and.
abstract: The FT IR and FT Raman spectra of Co(en)3Al3P4O16.3H2O (compound I) and [NH4]3[Co(NH3)6]3[Al2 (PO4)4]2.2H2O (compound II) are recorded and analysed based on the vibrations of Co(en)(3)3+, Co(NH3)(6)3+, NH4, Al-O-P, PO3, PO2 and H2O. The observed splitting of bands indicate that the site symmetry and correlation field effects are appreciable in both the compounds. In compound I, the overtone of CH2 deformation Fermi resonates with its symmetric stretching vibration. The NH4 ion in compound II is not free to rotate in the crystalline lattice. Hydrogen bonding of different groups is also discussed.
authors.affiliation: St John's College, Anchal, Kollam, India.
authors.forename: A
authors.initials: A
authors.lastname: John
authors.forename: D
authors.initials: D
authors.lastname: Philip
authors.forename: K R
authors.initials: KR
authors.lastname: Morgan
authors.forename: S
authors.initials: S
authors.lastname: Devanarayanan
mesh_terms: D017607:Aluminum Compounds / Q000737:chemistry*; D000641:Ammonia / Q000737:chemistry; D000838:Anions / Q000737:chemistry; D002412:Cations / Q000737:chemistry; D009942:Organometallic Compounds / Q000737:chemistry*; D010710:Phosphates / Q000737:chemistry*; D000644:Quaternary Ammonium Compounds / Q000737:chemistry*; D013055:Spectrophotometry, Infrared; D013059:Spectrum Analysis, Raman; D014867:Water / Q000737:chemistry
chemical_list: D017607:Aluminum Compounds; D000838:Anions; D002412:Cations; D009942:Organometallic Compounds; D010710:Phosphates; D000644:Quaternary Ammonium Compounds; C424695:ammonium hexaamminecobalt(III) aluminum phosphate; C424696:tris(ethylenediamine)cobalt(III) aluminum phosphate; D014867:Water; D000641:Ammonia; C012714:aluminum phosphate