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Use of EPR Spectroscopy in Elucidating Electronic Structures of Paramagnetic Transition Metal Complexes
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Abstract
Electronic structure is an important concept in chemistry. Among the techniques that can be used to understand electronic structure, EPR spectroscopy is unique in the sense that it can specifically probe paramagnetic molecules. This paper describes a number of fundamental concepts of EPR spectroscopy and its application to paramagnetic transition metal ions. As examples, EPR spectra of two paramagnetic metalloporphyrin complexes are used to define electronic structure of these molecules. The concepts described can be used in upper-level undergraduate and first-year graduate classes.
Keywords (Audience):
Upper-Division UndergraduateKeywords (Domain):
Laboratory InstructionKeywords (Feature):
Advanced Chemistry Classroom and LaboratoryKeywords (Pedagogy):
Hands-On Learning / ManipulativesKeywords (Subject):
Bioinorganic ChemistryCiting Articles
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This article has been cited by 5 ACS Journal articles (5 most recent appear below).
Structural, Magnetic, and Electronic Properties of Phenolic Oxime Complexes of Cu and Ni
Alexander M. Whyte, Benjamin Roach, David K. Henderson, Peter A. Tasker, Michio M. Matsushita, Kunio Awaga, Fraser J. White, Patricia Richardson, and Neil RobertsonInorganic Chemistry2011 50 (24), 12867-12876Structural, Magnetic, and Electronic Properties of Phenolic Oxime Complexes of Cu and Ni
Alexander M. Whyte, Benjamin Roach, David K. Henderson, Peter A. Tasker, Michio M. Matsushita, Kunio Awaga, Fraser J. White, Patricia Richardson, and Neil RobertsonInorganic Chemistry2011 50 (24), 12867-12876Square planar complexes of the type Ni(L1)2, Ni(L2)2, Cu(L1)2, and Cu(L2)2, where L1H = 2-hydroxy-5-t-octylacetophenone oxime and L2H = 2-hydroxy-5-n-propylacetophenone oxime, have been prepared and characterized by single-crystal X-ray diffraction, ...
Egg-Citing! Isolation of Protoporphyrin IX from Brown Eggshells and Its Detection by Optical Spectroscopy and Chemiluminescence
Michelle L. Dean, Tyson A. Miller, and Christian BrücknerJournal of Chemical Education2011 88 (6), 788-792Egg-Citing! Isolation of Protoporphyrin IX from Brown Eggshells and Its Detection by Optical Spectroscopy and Chemiluminescence
Michelle L. Dean, Tyson A. Miller, and Christian BrücknerJournal of Chemical Education2011 88 (6), 788-792A simple and cost-effective laboratory experiment is described that extracts protoporphyrin IX from brown eggshells. The porphyrin is characterized by UV−vis and fluorescence spectroscopy. A chemiluminescence reaction (peroxyoxalate ester fragmentation) ...
What Is the True Color of Fresh Meat? A Biophysical Undergraduate Laboratory Experiment Investigating the Effects of Ligand Binding on Myoglobin Using Optical, EPR, and NMR Spectroscopy
Kimberly Linenberger, Stacey Lowery Bretz, Michael W. Crowder, Robert McCarrick, Gary A. Lorigan, and David L. TierneyJournal of Chemical Education2011 88 (2), 223-225What Is the True Color of Fresh Meat? A Biophysical Undergraduate Laboratory Experiment Investigating the Effects of Ligand Binding on Myoglobin Using Optical, EPR, and NMR Spectroscopy
Kimberly Linenberger, Stacey Lowery Bretz, Michael W. Crowder, Robert McCarrick, Gary A. Lorigan, and David L. TierneyJournal of Chemical Education2011 88 (2), 223-225With an increased focus on integrated upper-level laboratories, we present an experiment integrating concepts from inorganic, biological, and physical chemistry content areas. Students investigate the effects of ligand strength on the spectroscopic ...
The Determination of the Geometry of Cu(II) Complexes: An EPR Spectroscopy Experiment
Eugenio Garribba and Giovanni MiceraJournal of Chemical Education2006 83 (8), 1229The Determination of the Geometry of Cu(II) Complexes: An EPR Spectroscopy Experiment
Eugenio Garribba and Giovanni MiceraJournal of Chemical Education2006 83 (8), 1229An instrumental experiment is presented in which eleven Cu(II) complexes are studied with electron paramagnetic resonance (EPR) spectroscopy. The EPR spectroscopy allows the characterization of the geometry and electronic structure of the copper ...
[BDTA]2[Cu(mnt)2]: An Almost Perfect One-Dimensional Magnetic Material
Sarah S. Staniland, Wataru Fujita, Yoshikatsu Umezono, Kunio Awaga, Philip J. Camp, Stewart J. Clark, and Neil RobertsonInorganic Chemistry2005 44 (3), 546-551[BDTA]2[Cu(mnt)2]: An Almost Perfect One-Dimensional Magnetic Material
Sarah S. Staniland, Wataru Fujita, Yoshikatsu Umezono, Kunio Awaga, Philip J. Camp, Stewart J. Clark, and Neil RobertsonInorganic Chemistry2005 44 (3), 546-551[BDTA]2[Cu(mnt)2] (BDTA = benzo-1,3,2-dithiazolyl, mnt = maleonitriledithiolate) was crystallized in the space group P1̄ with an inversion center on Cu giving a stacked structure with each metal complex anion sandwiched by two cations. Short ...
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- Received: August 03, 2009
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