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Message from discussion Dinitrochlorbenzol (DNCB) - Isomere
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Joachim Zink  
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 More options Nov 21 2002, 2:56 am
Newsgroups: de.sci.chemie
From: joggl_z...@yahoo.de (Joachim Zink)
Date: 20 Nov 2002 23:56:50 -0800
Local: Thurs, Nov 21 2002 2:56 am
Subject: Dinitrochlorbenzol (DNCB) - Isomere
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Hallo,
eine etwas mathematisch angehauchte Frage:
Ich möchte die Anzahl der Strukturisomeren von Dinitrochlorbenzol
berechnen.
Durch Aufmalen und Abzählen komme ich auf 6.
Wie aber berechnet man das systematisch für diesen und ähnliche Fälle?
Ich dacht an so was wie Ringpermutation o.ä., aber mir hagelt die
Symmetrie immer irgendwie dazwischen. Ich finde kein 'funktionierendes
System', wie man so was berechnet.
Kann jemand helfen?
Danke und Gruss
Joachim

 
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