1‑Phenyl-3-(pyrid-2-yl)benzo[<i>e</i>][1,2,4]triazinyl: The First “Blatter Radical” for
Coordination Chemistry
Ian S. Morgan
Anssi Peuronen
Mikko M. Hänninen
Robert W. Reed
Rodolphe Clérac
Heikki
M. Tuononen
10.1021/ic402954p.s001
https://acs.figshare.com/articles/journal_contribution/1_Phenyl_3_pyrid_2_yl_benzo_i_e_i_1_2_4_triazinyl_The_First_Blatter_Radical_for_Coordination_Chemistry/2335933
A neutral air- and moisture-stable
N,N′-chelating radical ligand, 1-phenyl-3-(pyrid-2-yl)benzo[<i>e</i>][1,2,4]triazinyl (<b>1</b>) was synthesized and
characterized by electron paramagnetic resonance spectroscopy, X-ray
crystallography, and magnetic measurements. Subsequent reaction of <b>1</b> with Cu(hfac)<sub>2</sub>·2H<sub>2</sub>O (hfac = hexafluoroacetylacetonate)
under ambient conditions afforded the coordination complex Cu(<b>1</b>)(hfac)<sub>2</sub> in which the radical binds to the metal
in a bidentate fashion. Magnetic susceptibility data collected from
1.8 to 300 K indicate a strong ferromagnetic metal-radical interaction
in the complex and weak antiferromagnetic radical···radical
interactions between the Cu(<b>1</b>)(hfac)<sub>2</sub> units.
Detailed computational investigations support this assignment. Radical <b>1</b> is a new addition to the growing library of 1,2,4-triazinyl
radicals and the first member of this family of paramagnetic species
synthesized specifically for coordination purposes.
2014-01-06 00:00:00
Radical 1
300 K
Coordination ChemistryA
ambient conditions
resonance spectroscopy
Magnetic susceptibility data
coordination purposes
interaction
Subsequent reaction
investigations support
bidentate fashion
Cu