wolff_kishner (Stranger)
07-26-04 23:12
No 521849
      Question about optical isomer notation     

I am confused about the (+) and (-) abbreviations for describing optical isomers. The abbreviation page on this site indicates that (-) is dextro and (+) is levo. However, in other chemistry-related web sites and books that I have read, (+) is dextro and (-) is levo. Who is correct?
 
 
 
 
    ApprenticeCook
(Hive Bee)
07-27-04 01:42
No 521878
      Dextro - light rotates clockwise Levo - light...     

Dextro - light rotates clockwise
Levo - light rotates anti-clockwise

So that makes dextro (+) and levo (-)

Hope that helps.
Where is the page that says dextro is (-)???
-AC

Its just my opinion, but no-one listens to me anyway, and rightly so...
 
 
 
 
    longimanus
(Newbee)
07-27-04 15:48
No 521985
      stereochemistry     

For those unfamiliar with stereochemistry nomenclature  reading IUPAC recommendations will be beneficial:
Stereochemical Terminology (http://www.chem.qmul.ac.uk/iupac/stereo/)
 
 
 
 
    wolff_kishner
(Stranger)
07-28-04 01:23
No 522071
      Re: Where is the page that says dextro is...     


Where is the page that says dextro is (-)???



The hive's own abbreviation page, in the FAQ section.

https://www.the-hive.ws/forum/showtext.pl?Cat=&Show=abbrev

 
 
 
 
    ApprenticeCook
(Hive Bee)
07-28-04 06:24
No 522146
      Must be a typo. I always get things like that...     

Must be a typo.

I always get things like that around the wrong way so i looked it up before i posted to make sure it was right...

-AC

Its just my opinion, but no-one listens to me anyway, and rightly so...
 
 
 
 
    Rhodium
(Chief Bee)
07-28-04 06:39
No 522153
      It is a typo, and we'll fix it.     

It is a typo, and we'll fix it.

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