Magnetic exchange coupling tunable by means of selective cation binding into poly(radical-armed) azacrowns

Literature Information

Publication Date 2006-10-31
DOI 10.1039/B613637K
Impact Factor 6.222
Authors

Kazuki Igarashi, Takashi Nogami


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Abstract

Host–guest complexes of tris(NN–CH2)-substituted 1,4,7-triazacyclononane and tetrakis(NN–CH2)-substituted 1,4,7,10-tetraazacyclododecane afforded the folded structures of the hosts where the NN radical oxygen atoms were coordinated to the guest metal ion, leading to enhanced antiferromagnetic couplings in the solid state and an ESR line broadening in the solution phase (NN = 4,4,5,5-tetramethylimidazolin-1-oxyl 3-oxide).

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