Magnetic phase transition in a heteromolecular hydrogen-bonded complex of nitronylnitroxide radicals.
An organic molecular acid-base complex has been synthesized from pyridine-substituted biradical 2 in a triplet (S = 1) ground state and a benzoic acid derivative of monoradical 3 with S = 1/2. The two constituent molecules are bound by an OH-N hydrogen bond in a crystalline solid state. The complex has been found to exhibit an antiferromagnetic phase transition at 5 K. The complex is the first example of a hydrogen-bonded heterospin, heteromolecular complex exhibiting a magnetic phase transition in purely organic molecule-based materials.
Hayakawa
Kenichi
K
Department of Materials Science, Graduate School of Science, Osaka City University, Sumiyoshi-ku, Osaka 558-8585, Japan.
Shiomi
Daisuke
D
Ise
Tomoaki
T
Sato
Kazunobu
K
Takui
Takeji
T