title: Saccharinato complexes of Ce(V) with 2-hydroxypyridine: synthesis, spectroscopic and thermal characteristics of [Ce(sac)2(SO4)(H2O)4] and [Ce(sac)2(SO4)(PyOH)2].
abstract: The synthesis of Ce(IV) complexes [Ce(sac)2(SO4)(H2O)4] (1) and [Ce(sac)2 (SO4)(PyOH)2] (2) (sac=saccharinate, PyOH=2-hydroxypyridine) starting with sodium saccharinate is described. Their vibrational and nuclear magnetic resonance (1H, 13C) spectra as well as their thermal mode of degradation were investigated. The data indicate that sac in complex 1 behaves as a monodentate ligand through the nitrogen atoms. Saccharinato ligand in complex 2 shows different mode of coordination, where it behaves as tridentate and binds Ce(IV) through its carbonylic oxygen, nitrogen and sulphonylic oxygen atoms. The most probable structure in complex 2 is that, units of [Ce(sac)2(SO4)(PyOH)2] are linked by bridges of the O- of sac sulphonyl leading to polymeric chains.
authors: Department of Chemistry, Faculty of Specific Education, Zagazig University, Zagazig 44519, Egypt. akmalsg@yahoo.com
authors: Akmal S
authors: AS
authors: Gaballa
authors: Said M
authors: SM
authors: Teleb
authors: Thomas
authors: T
authors: Müller
mesh_terms: D002563:Cerium / Q000737:chemistry*; D009682:Magnetic Resonance Spectroscopy; D015394:Molecular Structure; D009942:Organometallic Compounds / Q000737:chemistry*; D011728:Pyridones / Q000737:chemistry*; D013055:Spectrophotometry, Infrared; D013696:Temperature; D014732:Vibration
chemical_list: D009942:Organometallic Compounds; D011728:Pyridones; D002563:Cerium; C017679:2-hydroxypyridine