COMPLEX-FORMATION OF BENZOPHENONE KETYL RADICAL AND TRIETHYLAMINE

被引：25

作者：

KAJII, Y ^{[1
]}

ITABASHI, H ^{[1
]}

SHIBUYA, K ^{[1
]}

OBI, K ^{[1
]}

机构：

[1] TOKYO INST TECHNOL,DEPT CHEM,TOKYO 152,JAPAN

来源：

JOURNAL OF PHYSICAL CHEMISTRY | 1992年 / 96卷 / 18期

关键词：

D O I：

10.1021/j100197a021

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：

Transient absorption experiments in the benzophenone-triethylamine (TEA) system have revealed that the hydrogen-bonded 1:1 complex is formed by the association of benzophenone ketyl radical (BPH) and TEA in nonpolar solvents at room temperature (298 K). The complex exhibits a broad visible absorption band with an absorption coefficient of 4000 M-1 cm-1 at the peak (555 nm). The equilibrium constants for complex formation are determined to be 99 +/- 6 M-1 in cyclohexane and 37 +/-4 M-1 in benzene. The complex is found to be nonfluorescent, although bare BPH is known as an emissive radical.

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页码：7244 / 7247

页数：4

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