EFFECTS OF GEOMETRY AND HYDROGEN-BONDING ON THE EXCITED TRIPLET-STATES OF 4-NITROPYRIDINE N-OXIDE AND DERIVATIVES

被引：9

作者：

EHARA, T ^{[1
]}

AKIYAMA, K ^{[1
]}

IKOMA, T ^{[1
]}

IKEGAMI, Y ^{[1
]}

TEROKUBOTA, S ^{[1
]}

机构：

[1] TOHOKU UNIV,INST CHEM REACT SCI,AOBA KU,SENDAI,MIYAGI 980,JAPAN

来源：

JOURNAL OF PHYSICAL CHEMISTRY | 1995年 / 99卷 / 08期

关键词：

D O I：

10.1021/j100008a009

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Time-resolved EPR and phosphorescence spectra have been observed for the lowest excited triplet states of 4-nitropyridine N-oxide and its alkyl derivatives. It has been shown that the ratio of the zero-field-splitting (zfs) parameters reflects the molecular geometry: the \E/D\ value decreases with increasing the twisting angle of the nitro group from the molecular plane. Protic solvents induce significant changes in the zfs parameters and the population ratio of the triplet sublevels. The results are discussed in terms of formation of the hydrogen bonding complex at the N-oxide oxygen atom.

引用

页码：2292 / 2295

页数：4

共 25 条

[1] PMDR STUDIES OF MAGNETIC AND DYNAMIC PROPERTIES OF LOWEST EXCITED TRIPLET-STATES OF AROMATIC CARBONYL MOLECULES - ACETOPHENONE, BENZALDEHYDE AND THEIR DERIVATIVES
CHENG, TH
HIROTA, N
[J]. MOLECULAR PHYSICS, 1974, 27 (02) : 281 - 307
[2] Dopp D, 1975, Top Curr Chem, P49, DOI 10.1007/BFb0050594
[3] ESERY JM, 1960, J CHEM SOC, P4953
[4] PRIMARY PHOTOCHEMICAL PROCESS OF 4-NITROPYRIDINE N-OXIDE .2. DECAY KINETICS OF PHOTOCHEMICAL INTERMEDIATES
HATA, N
TSUCHIYA, T
ONO, I
[J]. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN, 1972, 45 (08) : 2386 - +
[5] PRIMARY PHOTOCHEMICAL PROCESS OF 4-NITROPYRIDINE N-OXIDE
HATA, N
OKUTSU, E
TANAKA, I
[J]. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN, 1968, 41 (08) : 1769 - +
[6] TIME-RESOLVED ELECTRON-PARAMAGNETIC-RES INVESTIGATION OF VERY SHORT-LIVED TRIPLET-STATES OF AZAAROMATICS
HIROTA, N
YAMAUCHI, S
TERAZIMA, M
[J]. REVIEWS OF CHEMICAL INTERMEDIATES, 1987, 8 (02): : 189 - 205
[7] TRIPLET-STATE YIELD OF AROMATIC NITRO COMPOUNDS
HURLEY, R
TESTA, AC
[J]. JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1968, 90 (08) : 1949 - &
[8] TIME-RESOLVED ESR STUDIES ON THE EXCITED TRIPLET-STATES AND PHOTOENOLIZATION OF 2-METHYLACETOPHENONE AND RELATED MOLECULES
IKOMA, T
AKIYAMA, K
TEROKUBOTA, S
IKEGAMI, Y
[J]. JOURNAL OF PHYSICAL CHEMISTRY, 1989, 93 (20) : 7087 - 7091
[9] EXCITATION-DEPENDENT FLUORESCENCE TO PHOSPHORESCENCE RATIO OF P-N,N-DIMETHYLNITROANILINE IN ETHANOL
KALLIR, AJ
SUTER, GW
WILD, UP
[J]. JOURNAL OF PHYSICAL CHEMISTRY, 1987, 91 (01) : 60 - 64
[10] KANEKO C, 1966, TETRAHEDRON LETT, P4729

← 1 2 3 →