Studies of the electronic structure of polyradicals by means of their magnetic properties

被引：6

作者：

Iwamura, H ^{[1
]}

Koga, N

Matsuda, K

机构：

[1] Kyushu Univ, Inst Fundamental Res Organ Chem, Higashi Ku, Fukuoka 8128581, Japan

[2] Kyushu Univ, Fac Pharmaceut Sci, Higashi Ku, Fukuoka 8128582, Japan

来源：

PURE AND APPLIED CHEMISTRY | 1998年 / 70卷 / 10期

关键词：

D O I：

10.1351/pac199870101953

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Having identified the limitations of the commonly used ESR spectroscopic method, we have employed a versatile method of measuring magnetic susceptibility and magnetization for the characterization of the ground state spins of di-, oligo- and polyradicals. Under these subjects are specifically included such items as the determination of a small singlet-triplet energy gap of < 1 K in conformationally fixed tetramethyleneethane (1), the demonstration of spin frustration or competing interaction in the ground state of antiferromagnetically coupled spins in triradical 3 and the dinuclear Mn(II) complex 5, and the analyses of super high-spin (S = 7 similar to 9) poly-carbenes 6 and 7.

引用

页码：1953 / 1960

页数：8

共 30 条

[1] TETRAMETHYLENEETHANES - PREPARATION AND REACTIONS OF A STEREOCHEMICALLY LABELED PRECURSOR
BEETZ, T
KELLOGG, RM
[J]. JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1973, 95 (23) : 7925 - 7926
[2] ANOMALOUS PARAMAGNETISM OF COPPER ACETATE
BLEANEY, B
BOWERS, KD
[J]. PROCEEDINGS OF THE ROYAL SOCIETY OF LONDON SERIES A-MATHEMATICAL AND PHYSICAL SCIENCES, 1952, 214 (1119): : 451 - 465
[3] The importance of including dynamic electron correlation in ab initio calculations
Borden, WT
Davidson, ER
[J]. ACCOUNTS OF CHEMICAL RESEARCH, 1996, 29 (02) : 67 - 75
[4] 3,6-DIMETHOXYFLUORENYLIDENE - A GROUND-STATE SINGLET CARBENE
CHUANG, C
LAPIN, SC
SCHROCK, AK
SCHUSTER, GB
[J]. JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1985, 107 (14) : 4238 - 4243
[5] TETRAMETHYLENEETHANE, A GROUND-STATE TRIPLET
DOWD, P
CHANG, W
PAIK, YH
[J]. JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1986, 108 (23) : 7416 - 7417
[6] THE 2,3-DIMETHYLENECYCLOHEXA-1,3-DIENE DIRADICAL IS A GROUND-STATE TRIPLET
DOWD, P
CHANG, WH
PAIK, YH
[J]. JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1987, 109 (17) : 5284 - 5285
[7] DOWD P, 1998, J CHEM SOC P2, P1007
[8] Dowd P., 1970, J AM CHEM SOC, V92, P1066, DOI [DOI 10.1021/JA00707A056, 10.1021/ja00707a056]
[9] Antiferromagnetic exchange interaction among the three spins placed in an isosceles triangular configuration in 2,4-dimethoxy-1,3,5-benzenetriyltris(N-tert-butyl nitroxide)
Fujita, J
Tanaka, M
Suemune, H
Koga, N
Matsuda, K
Iwamura, H
[J]. JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1996, 118 (39) : 9347 - 9351
[10] ITOH T, UNPUB

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