substituent

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Substituent
In organic chemistry, a substituent is an atom or group of atoms substituted in place of a hydrogen atom on the parent chain of a hydrocarbon. The suffix -yl (meaning "attached to") is used when naming organic compounds that contain a substituent. Additionally, when naming hydrocarbons that contain a substituent, positional numbers are used to indicate which carbon atom the substituent is attached to when such information is needed to distinguish between structural isomers. The polar effect exerted by a substituent is a combination of the inductive effect and the mesomeric effect. Additional Steric effects result from the volume occupied by a substituent.
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Substituenten
Als Substituenten (v. lat.: substituere = ersetzen) im engeren Sinne bezeichnet man in der Chemie Atome oder Atomgruppen in einem Molekül, die neu an der Stelle eines anderen Atoms eingefügt wurden und dieses somit ersetzen (substituieren). Die entsprechende Reaktion nennt man Substitutionsreaktion. Das nicht mehr erwünschte Atom wird dabei als Abgangsgruppe abgespalten.
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Substituent
Een substituent is in de organische chemie een atoom of atoomgroep die één of meer waterstofatomen in het molecule kan vervangen. Veel functionele groepen kunnen als substituent worden beschouwd. Een aantal veel voorkomende substituenten staan in onderstaande tabel.
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Substituent
organisk kemi är en substituent en atom eller en grupp atomer som tar en väteatoms plats i en kolkedja. Funktionella grupper utgör en delmängd av alla substituenter.
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substituent
عوض ،قابل تعويض ،توکيلى
شيمى : گروه استخلافى
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