TY - JOUR
T1 - Novel aromatic N-oxyl radical based on the benzo[g]quinoline skeleton
T2 - Synthesis and intermolecular ferromagnetic interaction
AU - Yao, Masaru
AU - Inoue, Hidenari
AU - Yoshioka, Naoki
N1 - Funding Information:
This work was supported in part by a Grant-in-Aid for Scientific Research (B) 15310094, and Exploratory Research 116651070. Financial support from the Keio Gijyuku Academic Development Funds is also acknowledged. M.Y. gratefully acknowledges the grant-in-aid for the 21st Century COE program ‘KEIO Life Conjugate Chemistry’ from the Ministry of Education, Culture, Sports, Science, and Technology, Japan.
PY - 2005/1/24
Y1 - 2005/1/24
N2 - A novel stable organic radical, 2,2-diphenyl-1,2-dihydrobenzo[g]quinoline- N-oxyl (2), has been synthesized and structurally characterized in order to examine the ring extension effect on the known derivative, 2,2-diphenyl-1,2- dihydroquinoline-N-oxyl (1). Based on SQUID measurement, 2 exhibited a ferromagnetic interaction obeying the Bleaney-Bowers equation with 2J = +4.6 cm -1. The X-ray analysis revealed an intermolecular edge-edge association of the aryl ring and N-oxyl moiety in the crystal of 2. The bifurcated edge-edge contacts between the α-spin site (nitroxyl O atom) and the β-spin site (aryl-H atoms) are responsible for the ferromagnetic interaction of 2.
AB - A novel stable organic radical, 2,2-diphenyl-1,2-dihydrobenzo[g]quinoline- N-oxyl (2), has been synthesized and structurally characterized in order to examine the ring extension effect on the known derivative, 2,2-diphenyl-1,2- dihydroquinoline-N-oxyl (1). Based on SQUID measurement, 2 exhibited a ferromagnetic interaction obeying the Bleaney-Bowers equation with 2J = +4.6 cm -1. The X-ray analysis revealed an intermolecular edge-edge association of the aryl ring and N-oxyl moiety in the crystal of 2. The bifurcated edge-edge contacts between the α-spin site (nitroxyl O atom) and the β-spin site (aryl-H atoms) are responsible for the ferromagnetic interaction of 2.
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U2 - 10.1016/j.cplett.2004.11.132
DO - 10.1016/j.cplett.2004.11.132
M3 - Article
AN - SCOPUS:11444269937
SN - 0009-2614
VL - 402
SP - 11
EP - 16
JO - Chemical Physics Letters
JF - Chemical Physics Letters
IS - 1-3
ER -