Magnetism in organic radical ion salts based on imidazolyl and benzimidazolyl nitronyl nitroxide

2004 ◽  
Vol 114 ◽  
pp. 651-653 ◽  
Author(s):  
T. Sugano ◽  
S. J. Blundell ◽  
W. Hayes ◽  
P. Day
Keyword(s):  
Organic Radical ◽  
Nitronyl Nitroxide ◽  
Radical Ion Salts

Magnetism in organic radical ion salts based on nitronyl nitroxide derivatives substituted with heterocyclic aromatic hydrocarbons

Polyhedron ◽  
2003 ◽  
Vol 22 (14-17) ◽  
pp. 2343-2348 ◽  
Author(s):  
Tadashi Sugano ◽  
Stephen J. Blundell ◽  
William Hayes ◽  
Peter Day
Keyword(s):  
Aromatic Hydrocarbons ◽  
Organic Radical ◽  
Nitronyl Nitroxide ◽  
Radical Ion Salts

Magnetism in organic radical ion salts and complexes based on nitronyl nitroxide

2001 ◽  
Vol 121 (1-3) ◽  
pp. 1812-1813 ◽  
Author(s):  
T. Sugano ◽  
S.J. Blundell ◽  
W. Hayes ◽  
P. Day
Keyword(s):  
Organic Radical ◽  
Nitronyl Nitroxide ◽  
Radical Ion Salts

Finding of Bulk Ferromagnetism in Stable Organic Radical Crystal

1992 ◽  
Vol 247 ◽  
Author(s):  
Minoru Kinoshita
Keyword(s):  
Crystal Structure ◽  
Long Range ◽  
Molecular And Crystal Structure ◽  
Organic Radical ◽  
Light Elements ◽  
Nitronyl Nitroxide ◽  
Β Phase ◽  
Phase Crystal ◽  
Iupac Nomenclature ◽  
Ordered State

ABSTRACTTransition to a ferromagnetic long range ordered state was found at 0.60 K in the orthorhombic β-phase crystal of p-nitrophenyl nitronyl nitroxide (or 2-(4′-nitrophenyl)-4, 4, 5, 5-tetramethyl-4, 5-dihydro-lH-imidazol-1-oxyl-3-N-oxide in the IUPAC nomenclature). This finding provides the first example of an organic bulk ferromagnet consisting of light elements and having a definite molecular and crystal structure.

Organic radical crystals, α-nitronyl nitroxide family: High-field magnetization study

1994 ◽  
Vol 201 ◽  
pp. 497-499 ◽  
Author(s):  
Y. Hosokoshi ◽  
M. Tamura ◽  
D. Shiomi ◽  
N. Iwasawa ◽  
K. Nozawa ◽  
...  
Keyword(s):  
High Field ◽  
Organic Radical ◽  
Nitronyl Nitroxide ◽  
Magnetization Study ◽  
Field Magnetization ◽  
High Field Magnetization

Ferromagnetic intermolecular interaction in an organic radical e-quinolyl nitronyl nitroxide (3-QNNN)

1992 ◽  
Vol 200 (3) ◽  
pp. 235-240 ◽  
Author(s):  
Tadashi Sugano ◽  
Masafumi Tamura ◽  
Minoru Kinoshita ◽  
Yoshii Sakai ◽  
Yuji Ohashi
Keyword(s):  
Intermolecular Interaction ◽  
Organic Radical ◽  
Nitronyl Nitroxide

scholarly journals When combined X-ray and polarized neutron diffraction data challenge high-level calculations: spin-resolved electron density of an organic radical

2017 ◽  
Vol 73 (4) ◽  
pp. 544-549 ◽  
Author(s):  
Ariste Bolivard Voufack ◽  
Nicolas Claiser ◽  
Claude Lecomte ◽  
Sébastien Pillet ◽  
Yves Pontillon ◽  
...  
Keyword(s):  
Neutron Diffraction ◽  
Diffraction Data ◽  
Density Functional ◽  
Theoretical Calculations ◽  
Organic Radical ◽  
Neutron Diffraction Data ◽  
Nitronyl Nitroxide ◽  
X Ray ◽  
Complete Active Space ◽  
Polarized Neutron

Joint refinement of X-ray and polarized neutron diffraction data has been carried out in order to determine charge and spin density distributions simultaneously in the nitronyl nitroxide (NN) free radical Nit(SMe)Ph. For comparison purposes, density functional theory (DFT) and complete active-space self-consistent field (CASSCF) theoretical calculations were also performed. Experimentally derived charge and spin densities show significant differences between the two NO groups of the NN function that are not observed from DFT theoretical calculations. On the contrary, CASSCF calculations exhibit the same fine details as observed in spin-resolved joint refinement and a clear asymmetry between the two NO groups.

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