Abstract
In order to pursue the possibility of charge-transfer organic ferromagnets, magnetic properties of the monocationic ClO4- and BF4-salts of a triaminobenzene derivative, 1,3,5-tris[bis(p-methoxyphenyl)amino]benzene (TBMAB), were characterized by means of ESR and a Faraday-type magnetic balance. MNDO-PM3 calculations predicted 1,3,5-tris(diphenylamino)benzene (TDAB) dication and trication to be ground-state triplet and quartet, respectively. Thus these triaminobenzenes fulfill the necessary precondition for the appearance of intermolecular ferromagnetic coupling based on so-called McConnell's second model. Negative Weiss constants (-1 to 0 K) and low spin concentrations (7-8 %) were observed for TBMAB-ClO4 and TBMAB-BF4, although, according to this rule, intermolecular ferromagnetic coupling is expected to occur for these systems.
| Original language | English |
|---|---|
| Pages (from-to) | 1417-1422 |
| Number of pages | 6 |
| Journal | Bulletin of the Chemical Society of Japan |
| Volume | 69 |
| Issue number | 5 |
| DOIs | |
| Publication status | Published - Jan 1 1996 |
| Externally published | Yes |
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All Science Journal Classification (ASJC) codes
- Chemistry(all)
Cite this
Magnetic Properties of 1,3,5-Tris[bis(p-methoxyphenyl)ainino]benzene Cation Radicals. / Yoshizawa, Kazunari; Hatanaka, Masashi; Ago, Hiroki; Tanaka, Kazuyoshi; Yamabe, Tokio.
In: Bulletin of the Chemical Society of Japan, Vol. 69, No. 5, 01.01.1996, p. 1417-1422.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Magnetic Properties of 1,3,5-Tris[bis(p-methoxyphenyl)ainino]benzene Cation Radicals
AU - Yoshizawa, Kazunari
AU - Hatanaka, Masashi
AU - Ago, Hiroki
AU - Tanaka, Kazuyoshi
AU - Yamabe, Tokio
PY - 1996/1/1
Y1 - 1996/1/1
N2 - In order to pursue the possibility of charge-transfer organic ferromagnets, magnetic properties of the monocationic ClO4- and BF4-salts of a triaminobenzene derivative, 1,3,5-tris[bis(p-methoxyphenyl)amino]benzene (TBMAB), were characterized by means of ESR and a Faraday-type magnetic balance. MNDO-PM3 calculations predicted 1,3,5-tris(diphenylamino)benzene (TDAB) dication and trication to be ground-state triplet and quartet, respectively. Thus these triaminobenzenes fulfill the necessary precondition for the appearance of intermolecular ferromagnetic coupling based on so-called McConnell's second model. Negative Weiss constants (-1 to 0 K) and low spin concentrations (7-8 %) were observed for TBMAB-ClO4 and TBMAB-BF4, although, according to this rule, intermolecular ferromagnetic coupling is expected to occur for these systems.
AB - In order to pursue the possibility of charge-transfer organic ferromagnets, magnetic properties of the monocationic ClO4- and BF4-salts of a triaminobenzene derivative, 1,3,5-tris[bis(p-methoxyphenyl)amino]benzene (TBMAB), were characterized by means of ESR and a Faraday-type magnetic balance. MNDO-PM3 calculations predicted 1,3,5-tris(diphenylamino)benzene (TDAB) dication and trication to be ground-state triplet and quartet, respectively. Thus these triaminobenzenes fulfill the necessary precondition for the appearance of intermolecular ferromagnetic coupling based on so-called McConnell's second model. Negative Weiss constants (-1 to 0 K) and low spin concentrations (7-8 %) were observed for TBMAB-ClO4 and TBMAB-BF4, although, according to this rule, intermolecular ferromagnetic coupling is expected to occur for these systems.
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U2 - 10.1246/bcsj.69.1417
DO - 10.1246/bcsj.69.1417
M3 - Article
VL - 69
SP - 1417
EP - 1422
JO - Bulletin of the Chemical Society of Japan
JF - Bulletin of the Chemical Society of Japan
SN - 0009-2673
IS - 5
ER -