| A STUDY ON THE STRUCTURAL EFFECT OF DOUBLE-BRIDGED CONJUGATIVE SYSTEMS |
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| 引用本文： | 蒋明谦,李桂英,戴萃辰. A STUDY ON THE STRUCTURAL EFFECT OF DOUBLE-BRIDGED CONJUGATIVE SYSTEMS[J]. 中国科学B辑(英文版), 1991, 0(10) |
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| 作者姓名： | 蒋明谦 李桂英 戴萃辰 |
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| 作者单位： | Institute of Chemistry，Academia Sinica，Beijing 100080，PRC，Institute of Chemistry，Academia Sinica，Beijing 100080，PRC，Institute of Chemistry，Academia Sinica，Beijing 100080，PRC |
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| 基金项目： | Project supported by the National Natural Science Foundation of China. |
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| 摘 要： | In this paper, the following carbonyl-imino bridged compounds and related analogs havebeen synthesized:X= C1, m = 0); and the structural effect of the carbonyl-imino bridges has been studied by means of the UV and other properties of the compounds. A new conception of conjugative segment is put forward. The structural bases for each of the three π-π* bands of (C) are ascertained and verified by modification on structure of segments, such as eliminating, merging, lengthening or shortening of segments. It is demonstrated that both bridges -CO-and -NH- can block the conjugated polarization of the whole molecule so as to form three segments S, M and L of which the λmax each exhibits relative independence. The electronic absorption peaks resulting from different segments can be readily recognized and the existence of each segment can be ascertained. This may provide a new way for structural analysis of bridged compounds.
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A STUDY ON THE STRUCTURAL EFFECT OF DOUBLE-BRIDGED CONJUGATIVE SYSTEMS |
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| JIANG MING-QIAN,LI GUI-YING AND DAI CUI-CHEN. A STUDY ON THE STRUCTURAL EFFECT OF DOUBLE-BRIDGED CONJUGATIVE SYSTEMS[J]. Science in China(Chemistry), 1991, 0(10) |
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| Authors: | JIANG MING-QIAN LI GUI-YING AND DAI CUI-CHEN |
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| Abstract: | |
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| Keywords: | carbonyl-imino bridged conjugative systems eonjugative segment conjugative polarization. |
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