Cart
Article
The Determination of the Geometry of Cu(II) Complexes: An EPR Spectroscopy Experiment
Hi-Res PDFPurchase the full-text
- PDF/HTML,
figures/images,
references and tables,
(where available)
Abstract
An 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 complexes. Three common ligands, ethylenediamine (en), 1,10-phenanthroline (phen), and 2,2′-bipyridine (bpy), were used. Examination of the EPR spectra of the solid-state compounds demonstrates that [Cu(en)2(ClO4)2], [Cu(en)2(BF4)2], and [Cu(en)2(NO3)2] have a dx2-y2 ground state and an elongated octahedral geometry; that [Cu(phen)2(H2O)](NO3)2, [Cu(phen)2(H2O)](BF4)2, and [Cu(bpy)2Cl]ClO4 are characterized by a geometry intermediate between the square pyramid and the trigonal bipyramid and a ground state corresponding to the linear combination of the dx2-y2 and dz2 orbitals; and that [Cu(phen)2Cl]ClO4, [Cu(phen)2Br]ClO4, [Cu(bpy)2Br]ClO4, [Cu(phen)2]ClO4, and [Cu(bpy)2I]ClO show a geometry close to the trigonal bipyramid and a ground state of dz2. A theoretical explanation of the results is presented.
Keywords (Audience):
Upper-Division UndergraduateKeywords (Domain):
Inorganic ChemistryKeywords (Pedagogy):
Hands-On Learning / ManipulativesKeywords (Subject):
Coordination CompoundsCiting Articles
Citation data is made available by participants in CrossRef's Cited-by Linking service. For a more comprehensive list of citations to this article, users are encouraged to perform a search in SciFinder.
This article has been cited by 2 ACS Journal articles (2 most recent appear below).
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 ...
Transition Metal Complexes of 3-Cyano- and 3-Nitroformazans
Joe B. Gilroy, Brian O. Patrick, Robert McDonald and Robin G. HicksInorganic Chemistry2008 47 (4), 1287-1294Transition Metal Complexes of 3-Cyano- and 3-Nitroformazans
Joe B. Gilroy, Brian O. Patrick, Robert McDonald and Robin G. HicksInorganic Chemistry2008 47 (4), 1287-1294The synthesis and characterization of six transition metal complexes of 3-cyano- and 3-nitroformazans are described. Three different formazans were reacted with nickel(II) to produce complexes with bidentate formazan ligands. Mononuclear NiL2 (L = ...
Full Text HTMLTools
-
Add to Favorites
-
Download Citation
-
Email a Colleague -
Permalink
Order Reprints
Rights & Permissions
Citation Alerts
History
- Received: August 03, 2009
ACS
Network
Facebook
Tweet This
CiteULike
Newsvine
Digg This
Delicious
