title: Detection and structural characterization of oxo-chromium(V)-sugar complexes by electron paramagnetic resonance.
abstract: This article describes the detection and characterization of oxo-Cr(V)-saccharide coordination compounds, produced during chromic oxidation of carbohydrates by Cr(VI) and Cr(V), using electron paramagnetic resonance (EPR) spectroscopy. After an introduction into the main importance of chromium (bio)chemistry, and more specifically the oxo-chromium(V)-sugar complexes, a general overview is given of the current state-of-the-art EPR techniques. The next step reviews which types of EPR spectroscopy are currently applied to oxo-Cr(V) complexes, and what information about these systems can be gained from such experiments. The advantages and pitfalls of the different approaches are discussed, and it is shown that the potential of high-field and pulsed EPR techniques is as yet still largely unexploited in the field of oxo-Cr(V) complexes. Subsequently, the discussion focuses on the analysis of oxo-Cr(V) complexes of different types of sugars and the implications of the results in terms of understanding chromium (bio)chemistry.
authors: Departamento de Químico Física-Área Química General, Facultad de Ciencias Bioquímicas y Farmacéuticas, Universidad Nacional de Rosario, Rosario, Santa Fe, Argentina.
authors: Luis F
authors: LF
authors: Sala
authors: Juan C
authors: JC
authors: González
authors: Silvia I
authors: SI
authors: García
authors: María I
authors: MI
authors: Frascaroli
authors: Sabine
authors: S
authors: Van Doorslaer
mesh_terms: D000818:Animals; D002241:Carbohydrates / Q000737:chemistry*; D002857:Chromium / Q000737:chemistry*; D004578:Electron Spin Resonance Spectroscopy / Q000379:methods*; D006801:Humans; D009942:Organometallic Compounds / Q000032:analysis* / Q000737:chemistry* / Q000378:metabolism
chemical_list: D002241:Carbohydrates; D009942:Organometallic Compounds; D002857:Chromium