A Synergy and Struggle of EPR, Magnetometry and NMR: A Case Study of Magnetic Interaction Parameters in a Six-Coordinate Cobalt(II) Complex

Inorganic Chemistry
Alexander A PavlovValentin V Novikov

Abstract

Herein, we combine for the first time SQUID magnetometry, cw-EPR, THz-EPR, and paramagnetic NMR spectroscopies to study the magnetic properties of a high-spin cobalt(II) heteroscorpionate complex. Complementary information provided by these methods allowed precise determination of the magnetic interaction parameters, thereby removing the ambiguity inherit to single-method studies. We systematically investigate the extent to which information about the magnetic interaction parameters can be deduced from reduced data sets. The detailed study revealed significant different magnetic properties in solid state and solution. To further exploit the information content of the solution NMR experimental results, we introduce the new concept of reduced paramagnetic shift. It allows for the determination of the magnetic axes and, subsequently, full NMR signal assignment. It is shown that even in complicated cases, in which common NMR analytics (integral intensities, relaxation factors, etc.) fail, it yields robust results.

References

Jul 17, 2003·Journal of the American Chemical Society·Naoto IshikawaYoukoh Kaizu
Sep 11, 2008·Angewandte Chemie·Richard E P Winpenny
Apr 5, 2013·Chemical Reviews·Daniel N WoodruffRichard A Layfield
Apr 17, 2013·Journal of the American Chemical Society·Silvia Gomez-CocaEliseo Ruiz
Apr 12, 2014·Current Opinion in Structural Biology·Mathias A S Hass, Marcellus Ubbink
Jul 18, 2014·Dalton Transactions : an International Journal of Inorganic Chemistry·Y Y Chia, M G Tay
Jul 23, 2015·Journal of the American Chemical Society·Valentin V NovikovRichard E P Winpenny
Aug 19, 2015·The Journal of Physical Chemistry Letters·Valentin V NovikovYan Z Voloshin
Apr 7, 2016·Annual Review of Analytical Chemistry·Sanhita Sinharay, Mark D Pagel
Oct 1, 2016·The Journal of Physical Chemistry Letters·Alexander A PavlovValentin V Novikov
Oct 26, 2016·Dalton Transactions : an International Journal of Inorganic Chemistry·J Krzystek, Joshua Telser
Dec 8, 2016·Dalton Transactions : an International Journal of Inorganic Chemistry·Peter CombaHubert Wadepohl
Mar 30, 2017·Dalton Transactions : an International Journal of Inorganic Chemistry·Marko DamjanovićMarkus Enders
Jun 6, 2017·Journal of Magnetic Resonance·Joscha NehrkornAlexander Schnegg
Sep 9, 2017·Journal of the American Chemical Society·Michele VonciNicholas F Chilton
Nov 25, 2017·Advanced Materials·Gábor MolnárAzzedine Bousseksou
May 29, 2018·Physical Chemistry Chemical Physics : PCCP·P NeugebauerJ van Slageren
Mar 22, 2019·Chemphyschem : a European Journal of Chemical Physics and Physical Chemistry·Alexander A PavlovValentin V Novikov
Apr 6, 2019·Physical Chemistry Chemical Physics : PCCP·Alexander A PavlovValentin V Novikov

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