Magnetic Properties of 1,3,5-Tris[bis(p-methoxyphenyl)ainino]benzene Cation Radicals

Kazunari Yoshizawa, Masashi Hatanaka, Hiroki Ago, Kazuyoshi Tanaka, Tokio Yamabe

Research output: Contribution to journalArticle

11 Citations (Scopus)

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 languageEnglish
Pages (from-to)1417-1422
Number of pages6
JournalBulletin of the Chemical Society of Japan
Volume69
Issue number5
DOIs
Publication statusPublished - Jan 1 1996
Externally publishedYes

Fingerprint

Benzene
Cations
Magnetic properties
Ground state
Paramagnetic resonance
Charge transfer
Salts
Derivatives
Bistris
perchlorate

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 journalArticle

@article{46b246309e0c44728b430c844f3bde42,
title = "Magnetic Properties of 1,3,5-Tris[bis(p-methoxyphenyl)ainino]benzene Cation Radicals",
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.",
author = "Kazunari Yoshizawa and Masashi Hatanaka and Hiroki Ago and Kazuyoshi Tanaka and Tokio Yamabe",
year = "1996",
month = "1",
day = "1",
doi = "10.1246/bcsj.69.1417",
language = "English",
volume = "69",
pages = "1417--1422",
journal = "Bulletin of the Chemical Society of Japan",
issn = "0009-2673",
publisher = "The Chemical Society of Japan",
number = "5",

}

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.

UR - http://www.scopus.com/inward/record.url?scp=0040318768&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0040318768&partnerID=8YFLogxK

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 -