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Ferromagnetic order in a novel imino nitroxide (IT)Py(C CH) radical derived from 2‐ethynyl‐pyridine
Author(s) -
Romero Francisco M.,
Ziessel Raymond,
Drillon Marc,
Tholence JeanLouis,
Paulsen Carley,
Kyritsakas Nathalie,
Fisher Jean
Publication year - 1996
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/adma.19960081013
Subject(s) - nitroxide mediated radical polymerization , ferromagnetism , supramolecular chemistry , spins , materials science , pyridine , molecule , hydrogen bond , crystallography , crystal structure , spin (aerodynamics) , chemical physics , condensed matter physics , physics , chemistry , polymer , thermodynamics , quantum mechanics , organic chemistry , radical polymerization , polymerization , composite material
Purely organic ferromagnets are rare , the main problem being the relative orientation of the spins in a three‐dimensional network. The first example of ferromagnetic ordering in an imino‐nitroxide radical is reported. A detailed analysis of the structure reveals that CCHO hydrogen bonds are responsible for both the crystal packing and the ferromagnetic spin interactions within an infinite chain of ordered molecules. This radical is unique: its structure is the first demonstration of the use of terminal acetylenes to generate supramolecular networks.