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Structure–Magnetism Relationships in α‐Nitronyl Nitroxide Radicals: Pitfalls and Lessons to be Learned
Author(s) -
Deumal Mercè,
Cirujeda Joan,
Veciana Jaume,
Novoa Juan J.
Publication year - 1998
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/(sici)1521-4095(199812)10:17<1461::aid-adma1461>3.0.co;2-z
Subject(s) - magnetism , nitroxide mediated radical polymerization , radical , ferromagnetism , materials science , condensed matter physics , crystal structure , crystallography , rational design , chemical physics , nanotechnology , chemistry , physics , polymer , organic chemistry , polymerization , radical polymerization , composite material
Rational design of persistent radicals with crystals having ferromagnetic ordering at high critical temperatures is an important challenge in materials science. This can only be achieved through the control of the crystal packaging of the radicals and a well founded structure–magnetism relationship. A statistical analysis is presented that shows that in α‐nitronyl nitroxide crystals it is not possible to define the magnetic role of the NO ⃛ON or C—‐H ⃛ON contacts just by looking at the local distance and geometry of one type of contacts; magneto‐structural correlations in these crystals must be collective.