Trispyrazolylborate Complexes: An Advanced Synthesis Experiment Using Paramagnetic NMR, Variable-Temperature NMR, and EPR Spectroscopies

作者: Timothy N. Abell , Robert M. McCarrick , Stacey Lowery Bretz , David L. Tierney

DOI: 10.1021/ACS.JCHEMED.7B00302

关键词: Coordination complexChemistryTrispyrazolylborateInfrared spectroscopyNuclear magnetic resonanceNuclear magnetic resonance spectroscopyElectron paramagnetic resonanceElectronic structureParamagnetismPhysical chemistryTransition metal

摘要: A structured inquiry experiment for inorganic synthesis has been developed to introduce undergraduate students advanced spectroscopic techniques including paramagnetic nuclear magnetic resonance and electron resonance. Students synthesize multiple complexes with unknown first row transition metals identify the by correlating data electronic structure. are assessed through an oral presentation of their spectral analyses conclusions. Data included in Supporting Information institutions without access EPR.

参考文章(20)
Carl Baer, Jay Pike, Infrared Spectroscopic Analysis of Linkage Isomerism in Metal−Thiocyanate Complexes Journal of Chemical Education. ,vol. 87, pp. 724- 726 ,(2010) , 10.1021/ED100284Z
Kimberly Linenberger, Stacey Lowery Bretz, Michael W. Crowder, Robert McCarrick, Gary A. Lorigan, David L. Tierney, 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 Journal of Chemical Education. ,vol. 88, pp. 223- 225 ,(2011) , 10.1021/ED100585T
Valeria Ugone, Eugenio Garribba, Giovanni Micera, Daniele Sanna, Equilibrium between Different Coordination Geometries in Oxidovanadium(IV) Complexes Journal of Chemical Education. ,vol. 92, pp. 1098- 1102 ,(2015) , 10.1021/ED500794M
R. A. Butera, D. H. Waldeck, An EPR Experiment for the Undergraduate Physical Chemistry Laboratory Journal of Chemical Education. ,vol. 77, pp. 1489- 1489 ,(2000) , 10.1021/ED077P1489
Eugenio Garribba, Giovanni Micera, The Determination of the Geometry of Cu(II) Complexes: An EPR Spectroscopy Experiment Journal of Chemical Education. ,vol. 83, pp. 1229- ,(2006) , 10.1021/ED083P1229
David E. Berry, Robin G. Hicks, Joe B. Gilroy, The Chemistry of Formazan Dyes. Synthesis and Characterization of a Stable Verdazyl Radical and a Related Boron-Containing Heterocycle Journal of Chemical Education. ,vol. 86, pp. 76- 79 ,(2009) , 10.1021/ED086P76
Londa L. Borer, An EPR study of vanadyl complexes for advanced undergraduate laboratory Journal of Chemical Education. ,vol. 59, pp. 1065- ,(1982) , 10.1021/ED059P1065
Juan A. McMillan, Electron paramagnetic resonance of free radicals Journal of Chemical Education. ,vol. 38, pp. 438- ,(1961) , 10.1021/ED038P438
Swiatoslaw. Trofimenko, Boron-pyrazole chemistry. II. Poly(1-pyrazolyl)-borates Journal of the American Chemical Society. ,vol. 89, pp. 3170- 3177 ,(1967) , 10.1021/JA00989A017