Radical anions of nitrobenzothiazoles. II. EPR study of free radical anions and ion pairs

被引：1
|
作者：
Ciminale, Francesco [1 ]
机构：
[1] Univ Bari, Dipartmento Chim, Via Orabona 4, I-70126 Bari, Italy
来源：
ARKIVOC | 2006年
关键词：
EPR spectroscopy; radical anions; ion pairs; nitrobenzothiazoles; one electron reduction;
D O I：
10.3998/ark.5550190.0007.610
中图分类号：
O62 [有机化学];
学科分类号：
070303 ; 081704 ;
摘要：
The paramagnetic species produced by reduction of the title compounds (NBTZ) with different reducing agents have been characterized by EPR spectroscopy. Radical ion pairs were observed upon reduction with alkali metals (Li, Na, K) in THF only from 5-, 6-, and 7-nitrobenzothiazole. The free radical anion of 7-NBTZ was obtained by reduction with Na in HMPA. Different tetraethylammonium ion pairs of the radical anion of 7-NBTZ were detected in HMPA when the reduction was performed by electrolysis at variable concentration of tetraethylammonium perchlorate as supporting electrolyte.
引用
收藏
页码：97 / 103
页数：7
相关论文
共 50 条
  • [11] A Fourier transform EPR study of uracil and thymine radical anions in aqueous solution
    Lü, JM
    Geimer, J
    Naumov, S
    Beckert, D
    PHYSICAL CHEMISTRY CHEMICAL PHYSICS, 2001, 3 (06) : 952 - 956
  • [12] Spin delocalization in radical anions containing two phosphaalkene groups: an EPR study
    Al Badri, A
    Jouaiti, A
    Geoffroy, M
    MAGNETIC RESONANCE IN CHEMISTRY, 1999, 37 (10) : 735 - 742
  • [13] EPR study of Sc3N@C80 radical anions
    Jakes, P
    Dinse, KP
    ELECTRONIC PROPERTIES OF MOLECULAR NANOSTRUCTURES, 2001, 591 : 118 - 121
  • [14] ION-PAIRS IN RADICAL-ANIONS WITH 6-COORDINATED SILICON ATOMS
    PROKOFEV, AI
    PROKOFEVA, TI
    BUBNOV, NN
    SOLODOVNIKOV, SP
    BELOSTOTSKAYA, IS
    ERSHOV, VV
    KABACHNIK, MI
    BULLETIN OF THE ACADEMY OF SCIENCES OF THE USSR DIVISION OF CHEMICAL SCIENCE, 1978, 27 (07): : 1321 - 1327
  • [15] PHOTOLYTIC GENERATION OF FREE-RADICAL ANIONS
    WINKLER, HJS
    WINKLER, H
    BOLLINGER, R
    CHEMICAL COMMUNICATIONS, 1966, (03) : 70 - &
  • [16] FREE-RADICAL ANIONS AND DIANIONS OF TETRAPHENYLETHYLENE
    CSERHEGYI, A
    JAGURGRO.J
    SZWARC, M
    JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1969, 91 (08) : 1892 - +
  • [17] SUBSTITUENT EFFECTS ON PROPERTIES OF AZOBENZENE FREE-RADICAL ANIONS .2. ION-PAIRS WITH TETRAETHYLAMMONIUM CATIONS
    KRYSZCZYNSKA, H
    KALINOWS.MK
    ROCZNIKI CHEMII, 1974, 48 (10): : 1791 - 1799
  • [18] REACTIONS OF PYRAZINE RADICAL ANIONS IN SOLUTION .1. STUDY OF KINETICS OF DIMERIZATION OF PYRAZINE RADICAL ANIONS
    HAY, RS
    POMERY, PJ
    AUSTRALIAN JOURNAL OF CHEMISTRY, 1971, 24 (11) : 2287 - &
  • [19] EPR STUDY OF RADICAL-ANIONS OF C-60 AND C-70
    FRIEDRICH, J
    SCHWEITZER, P
    DINSE, KP
    RAPTA, P
    STASKO, A
    APPLIED MAGNETIC RESONANCE, 1994, 7 (2-3) : 415 - 425
  • [20] Aromatic radical anions as possible intermediates in the nucleophilic aromatic substitution (SNAr):: an EPR study
    Grossi, L
    Strazzari, S
    JOURNAL OF THE CHEMICAL SOCIETY-PERKIN TRANSACTIONS 2, 1999, (10): : 2141 - 2146
12345