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In chemistry, primarily organic and computational chemistry, a stereoelectronic effect is an effect on molecular geometry, reactivity, or physical properties due to spatial relationships in the molecules' electronic structure, in particular the interaction between atomic and/or molecular orbitals. Phrased differently, stereoelectronic effects can also be defined as the geometric constraints placed on the ground and/or transition states of molecules that arise from considerations of orbital overlap. Thus, a stereoelectronic effect explains a particular molecular property or reactivity by invoking stabilizing or destabilizing interactions that depend on the relative orientations of electrons (bonding or non-bonding) in space.

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  • Stereoelektronische Effekte (de)
  • Effet stéréoélectronique (fr)
  • 立体電子効果 (ja)
  • Stereoelectronic effect (en)
  • 立体电子效应 (zh)
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  • Stereoelektronische Effekte sind räumliche Orientierungen von Molekülen oder bestimmte Verläufe einer chemischen Reaktion, welche sich aus der räumlichen Anordnung von Molekülorbitalen ergeben. Die Bevorzugung dieser folgt dabei aus Donor-Akzeptor-Wechselwirkungen dieser Orbitale. (de)
  • Les effets stéréoélectroniques (au pluriel, en général) regroupent les influences stériques et électroniques intervenant dans le déroulement d'une réaction chimique ou dans la conformation d'une molécule. (fr)
  • 立体電子効果(りったいでんしこうか、英: stereoelectronic effect)とは、ある特定の立体配座や立体配置においてのみ働く軌道間の相互作用によって、化合物の構造や安定性や反応性に影響が及ぶことをいう。 軌道同士が相互作用するためには空間的に近接しなければならないので、化合物がある特定の立体配座や立体配置をとった時にだけ相互作用が働くことがある。するとその特定の配座や配置が安定化されたり、それらの持つ反応性が強調されることになる。 (ja)
  • 立体电子效应,重要理论有机化学概念之一。立体电子效应是综合了立体效应和电子效应的结果,但不是简单的两种效应加合的结果。由于共价键具有方向性,即具有特定的空间取向,这导致了电子效应对分子不同部位的影响存在差异。这就是立体电子效应最根本的立足点。 立体电子效应可以解释很多其他效应解释不了的现象。比如二氯甲烷的惰性问题,内酯比酯活泼的问题,环醚比醚活泼的问题等等。下面举例说明立体电子效应的应用和意义。立体电子效应这个术语是E.J.Corey于60年代发明的。 (zh)
  • In chemistry, primarily organic and computational chemistry, a stereoelectronic effect is an effect on molecular geometry, reactivity, or physical properties due to spatial relationships in the molecules' electronic structure, in particular the interaction between atomic and/or molecular orbitals. Phrased differently, stereoelectronic effects can also be defined as the geometric constraints placed on the ground and/or transition states of molecules that arise from considerations of orbital overlap. Thus, a stereoelectronic effect explains a particular molecular property or reactivity by invoking stabilizing or destabilizing interactions that depend on the relative orientations of electrons (bonding or non-bonding) in space. (en)
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  • http://commons.wikimedia.org/wiki/Special:FilePath/立体电子效应述图-ZQK.png
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